Marine science technology innovation provides power and guarantees for marine eco-civilization construction,which provides direction and material support for marine science technology innovation.Therefore,the coordina...Marine science technology innovation provides power and guarantees for marine eco-civilization construction,which provides direction and material support for marine science technology innovation.Therefore,the coordinated development of the two is of great significance to the marine economy sustainable development in China’s coastal areas.On the basis of clarifying the connotations of marine science technology innovation and marine eco-civilization in China’s coastal areas from 2006 to 2019,the mechanism for their coordinated development was analysed.A comprehensive indicator system based on the connotation of the two was constructed,and the coordinated development relationship was empirically tested using the coupled coordination model and the panel vector autoregressive(PVAR)model.The results show that:1)the level of China’s coastal marine science technology innovation continues to improve,gradually forming the core of the development of marine science technology innovation in the north,east and south of Shandong,Shanghai and Guangdong;the level of marine eco-civilization development fluctuating upward trend,showing obvious spatial differentiation characteristics.2)The degree of coordination of marine science technology innovation and marine eco-civilization is growing over time.There is no causal relationship between marine science technology innovation and marine eco-civilization in the northern marine economic circle,but there is a two-way causal relationship between the two in the eastern and southern marine economic circles.3)Marine eco-civilization shows a significant positive and continuous impact on marine science technology innovation,and marine science technology innovation shows a long-term,continuous,fluctuating,and lagging impact on marine eco-civilization.The overall role of marine eco-civilization on marine science technology innovation is dominant,and there are significant differences in the impact effects of the two major marine economic circles.展开更多
The National Natural Science Foundation of China is one of the major funding agencies for neuro rehabilitation research in China.This study reviews the frontier directions and achievements in the field of neurorehabil...The National Natural Science Foundation of China is one of the major funding agencies for neuro rehabilitation research in China.This study reviews the frontier directions and achievements in the field of neurorehabilitation in China and wo rldwide.We used data from the Web of Science Core Collection(WoSCC) database to analyze the publications and data provided by the National Natural Science Foundation of China to analyze funding information.In addition,the prospects for neurorehabilitation research in China are discussed.From 2010 to 2022,a total of 74,220 publications in neurorehabilitation were identified,with there being an overall upward tendency.During this period,the National Natural Science Foundation of China has funded 476 research projects with a total funding of 192.38 million RMB to support neuro rehabilitation research in China.With the support of the National Natural Science Foundation of China,China has made some achievements in neurorehabilitation research.Research related to neurorehabilitation is believed to be making steady and significant progress in China.展开更多
Objective The National Natural Science Foundation of China(NSFC)has made great progress in promoting the development of aortic dissection research in recent years.This study aimed to examine the development and resear...Objective The National Natural Science Foundation of China(NSFC)has made great progress in promoting the development of aortic dissection research in recent years.This study aimed to examine the development and research status of aortic dissection research in China so as to provide references for future research.Methods The NSFC projects data from 2008 to 2019 were collected from the Internet-based Science Information System and other websites utilized as search engines.The publications and citations were retrieved by Google Scholar,and the impact factors were checked by the InCite Journal Citation Reports database.The investigator’s degree and department were identified from the institutional faculty profiles.Results A total of 250 grant funds totaling 124.3 million Yuan and resulting in 747 publications were analyzed.The funds in economically developed and densely populated areas were more than those in underdeveloped and sparsely populated areas.There was no significant difference in the amount of funding per grant between different departments’investigators.However,the funding output ratios of the grants for cardiologists were higher than those for basic science investigators.The amount of funding for clinical researchers and basic scientific researchers in aortic dissection was also similar.Clinical researchers were better in terms of the funding output ratio.Conclusion These results suggest that the medical and scientific research level of aortic dissection in China has been greatly improved.However,there are still some problems that urgently need to be solved,such as the unreasonable regional allocation of medical and scientific research resources,and the slow transition from basic science to clinical practice.展开更多
The potential of citizen science projects in research has been increasingly acknowledged,but the substantial engagement of these projects is restricted by the quality of citizen science data.Based on the largest emerg...The potential of citizen science projects in research has been increasingly acknowledged,but the substantial engagement of these projects is restricted by the quality of citizen science data.Based on the largest emerging citizen science project in the country-Birdreport Online Database(BOD),we examined the biases of birdwatching data from the Greater Bay Area of China.The results show that the sampling effort is disparate among land cover types due to contributors’ preference towards urban and suburban areas,indicating the environment suitable for species existence could be underrepresented in the BOD data.We tested the contributors’ skill of species identification via a questionnaire targeting the citizen birders in the Greater Bay Area.The questionnaire show that most citizen birdwatchers could correctly identify the common species widely distributed in Southern China and the less common species with conspicuous morphological characteristics,while failed to identify the species from Alaudidae;Caprimulgidae,Emberizidae,Phylloscopidae,Scolopacidae and Scotocercidae.With a study example,we demonstrate that spatially clustered bird watching visits can cause underestimation of species richness in insufficiently sampled areas;and the result of species richness mapping is sensitive to the contributors’ skill of identifying bird species.Our results address how avian research can be influenced by the reliability of citizen science data in a region of generally high accessibility,and highlight the necessity of pre-analysis scrutiny on data reliability regarding to research aims at all spatial and temporal scales.To improve the data quality,we suggest to equip the data collection frame of BOD with a flexible filter for bird abundance,and questionnaires that collect information related to contributors’ bird identification skill.Statistic modelling approaches are encouraged to apply for correcting the bias of sampling effort.展开更多
“China’s Human Rights Science”is undoubtedly a brand-new concept.Just as China has its own philosophy,literature,history,law,political science,and sociology,it should also have its own human rights science.China’s...“China’s Human Rights Science”is undoubtedly a brand-new concept.Just as China has its own philosophy,literature,history,law,political science,and sociology,it should also have its own human rights science.China’s Human Rights Science refers to the cognitive science of human rights in China.Developing its disciplinary system,academic system,and discourse system,and constructing an independent Chinese human rights knowledge system,are essential requirements for promoting the great rejuvenation of the Chinese nation through Chinese modernization and creating a new form of human civilization.China’s Human Rights Science originated in China,grew in China,and deepened through China’s human rights practices.China’s Human Rights Science adhere to the universality of human rights principles and possess distinctive characteristics.It works as the knowledge-based organization,academic refinement,and theoretical expression of the path of human rights development that conforms to the trend of the times and suits China’s national conditions,as pursued by the Communist Party of China in leading the people.China’s Human Rights Science can enrich and develop the theory of human rights civilization,and should become a global public product of human rights.展开更多
To improve our health care services,promote balanced development of inter-regional and inter-disciplinary medical care skills,and effectively implement public hospital reform,the former Ministry of Health,State Chines...To improve our health care services,promote balanced development of inter-regional and inter-disciplinary medical care skills,and effectively implement public hospital reform,the former Ministry of Health,State Chinese Medicine Administration Bureau and the Ministry of Finance allocated state funds in 2010 to support a National Clinical Key Specialty Construction Project.The project supports the acquisition of key equipment,personnel training and development of clinical diagnosis technology in order to develop high-quality medical resources and improve clinical services.Because of the important role nursing plays,clinical nursing and specialty care were also included in the project.The Chinese Nursing Association was commissioned to oversee this project,which awarded 211 million RMB to nursing disciplines in 86 hospitals representing all regions of China.This funding has supported the rapid development of nursing disciplines,the results of which are outlined and described in this review.展开更多
In the knowledge economy era,science and technology(S&T) resources are getting more and more important in shaping regional competiveness and building regional innovation capacity.As such,the spatial distribution o...In the knowledge economy era,science and technology(S&T) resources are getting more and more important in shaping regional competiveness and building regional innovation capacity.As such,the spatial distribution of S&T resources is a key to understanding regional development and disparities.By designing an input-output indicator system,this paper develops an evaluation model to examine the spatial distribution of S&T resources in China and assess their spatial efficiency.Moreover,the paper tries to explain spatial differences in the efficiency of S&T resources in China.Major findings are:1) the input and output of S&T resources in China shows a clear T-shaped spatial structure,i.e.,concentrated mainly in the coastal region and along the Changjiang(Yangtze) River;2) the efficiency of S&T resources in China displays strong spatial disparities,with the level of efficiency descending from the east to the west while high efficiency appearing in only several clusters;3) the utilization rates of S&T resources in most provinces are quite low,resulting in low efficiency of S&T resources allocation.The paper suggests that the utilization rate of S&T resources should be raised and the commercialization of S&T outputs should be enhanced to improve the efficiency of S&T resources in China.展开更多
Objective This study explains the application number and funding rate of oncology projects undertaken by the National Natural Science Foundation of China(NSFC),with focus on tumor radiotherapy-related research over th...Objective This study explains the application number and funding rate of oncology projects undertaken by the National Natural Science Foundation of China(NSFC),with focus on tumor radiotherapy-related research over the past 11 years.Methods A stratified analysis was carried out on the application and funding status of tumor radiotherapy studies in different NSFC project categories,different research areas,and different tumor types.Research areas that required specific focus,such as immunology-related radiotherapy,multimodality imaging and radiomics,and post-radiotherapy organ injury,were separately analyzed.Results The status and development trends of various related research fields were studied,and the research results were presented with the support of the NSFC,in order to provide reference for future applications and funding allocations.Conclusion The number of applications for funding increases every year.Although the total number of funded projects has also increased every year,the funding rate has decreased year by year.Projects on radiotherapy and immunization have been at the forefront in recent years,and the funding rate for these projects increases yearly.展开更多
China is a country abundant in lakes. Lake science development in China, not only aims at the international frontiers of correlative subject development, but also focuses on the national strategic needs in different a...China is a country abundant in lakes. Lake science development in China, not only aims at the international frontiers of correlative subject development, but also focuses on the national strategic needs in different ages. This paper describes the general situation and distribution characteristics of Chinese lakes, systematically reviews development process of Chinese lake science and its progress in lake physics, lake chemistry, lake biology, lake sediment and lake-watershed management, finally looks forward to the developing tendency of Chinese lake science in future.展开更多
1. IntroductionThe impacts arising from climate change and climate variability pose major challenges to global and regional security and economic prosperity(UNFCCC,2015).Some regions are more at risk than others, th...1. IntroductionThe impacts arising from climate change and climate variability pose major challenges to global and regional security and economic prosperity(UNFCCC,2015).Some regions are more at risk than others, through heightened exposure to climatic hazards, and high vulnerability and exposure to such hazards. China, with its rapid economic development, large and growing population, and frequent occurrence of disasters associated with heavy rainfall, flooding, tropical cyclones,展开更多
As a country with one of the world's most rapidly developing economies, China is home to wonderful opportunities for its people and the nation as a whole. An essential element for continued economic prosperity is a w...As a country with one of the world's most rapidly developing economies, China is home to wonderful opportunities for its people and the nation as a whole. An essential element for continued economic prosperity is a water supply of guaranteed quality and quantity, providing critical insurance for food safety, health, and political stability. However, China's economic success has come with serious water resources problems, intensified by human activities and climate change. The nation is now facing extreme levels of water pollution, soil erosion, and sedimentation, along with floods, droughts, and urban storms. Taken together, these impacts have provided a serious headwind to socioeconomic development in China. This article discusses the problems and emerging opportunities for the coming generation of water scientists and engineers.展开更多
The early twenty-first century witnessed the publication of the book series Zhongguo kexue jishu shi中国科学技术史(History of science and technology in pre-modern China),which was initiated and organized by the Instit...The early twenty-first century witnessed the publication of the book series Zhongguo kexue jishu shi中国科学技术史(History of science and technology in pre-modern China),which was initiated and organized by the Institute for the History of Natural Sciences,Chinese Academy of Sciences,and compiled by a multitude of Chinese scholars.In comparison with Science and Civilisation in China by Dr.Joseph Needham,Zhongguo kexue jishu shi is superior in the layout characteristics,literature collection,research and explication,field investigation,and simulation experiments.展开更多
In the present stage of accelerated development of science and technology at the turn of the century it may be deemed that the geological science in China is destined to prosper, as viewed from the increasing society ...In the present stage of accelerated development of science and technology at the turn of the century it may be deemed that the geological science in China is destined to prosper, as viewed from the increasing society needs, the scientific problems and the basic technological background provided by the society, the three basic elements for the development of science. Owing to the sagacity and foresight of the founders of geology in China, Chinese geological research had already won a world fame in 1920s to 1930s. From the 1950s to 1970s the geological science in China had undergone a rapid development. From the end of 1970s onwards the geological science in China had undergone an overall development. With the acceptance of the new concept of Earth System Science by the majority of geologists, all branches of geological studies will merge into a comprehensive and coordinate research and the geological science in China will be facing an entirely new stage of development in the 21st century.展开更多
(1)Major scientific and technological innovations have been made in the Deep Continental Scientific Drilling Project of the Songliao Basin,Well Songke 2 has a drilling depth of 7018 m.The large-bore coring technology ...(1)Major scientific and technological innovations have been made in the Deep Continental Scientific Drilling Project of the Songliao Basin,Well Songke 2 has a drilling depth of 7018 m.The large-bore coring technology system for ultra-deep wells has overcome major technical problems in deep exploration of the earth,such as ultra-high temperature drilling technology,and has created four world records.Two kinds of clean energy sources with a good exploration and development potential,i.e..展开更多
基金Under the auspices of the National Natural Science Foundation of China(No.42076222)。
文摘Marine science technology innovation provides power and guarantees for marine eco-civilization construction,which provides direction and material support for marine science technology innovation.Therefore,the coordinated development of the two is of great significance to the marine economy sustainable development in China’s coastal areas.On the basis of clarifying the connotations of marine science technology innovation and marine eco-civilization in China’s coastal areas from 2006 to 2019,the mechanism for their coordinated development was analysed.A comprehensive indicator system based on the connotation of the two was constructed,and the coordinated development relationship was empirically tested using the coupled coordination model and the panel vector autoregressive(PVAR)model.The results show that:1)the level of China’s coastal marine science technology innovation continues to improve,gradually forming the core of the development of marine science technology innovation in the north,east and south of Shandong,Shanghai and Guangdong;the level of marine eco-civilization development fluctuating upward trend,showing obvious spatial differentiation characteristics.2)The degree of coordination of marine science technology innovation and marine eco-civilization is growing over time.There is no causal relationship between marine science technology innovation and marine eco-civilization in the northern marine economic circle,but there is a two-way causal relationship between the two in the eastern and southern marine economic circles.3)Marine eco-civilization shows a significant positive and continuous impact on marine science technology innovation,and marine science technology innovation shows a long-term,continuous,fluctuating,and lagging impact on marine eco-civilization.The overall role of marine eco-civilization on marine science technology innovation is dominant,and there are significant differences in the impact effects of the two major marine economic circles.
文摘The National Natural Science Foundation of China is one of the major funding agencies for neuro rehabilitation research in China.This study reviews the frontier directions and achievements in the field of neurorehabilitation in China and wo rldwide.We used data from the Web of Science Core Collection(WoSCC) database to analyze the publications and data provided by the National Natural Science Foundation of China to analyze funding information.In addition,the prospects for neurorehabilitation research in China are discussed.From 2010 to 2022,a total of 74,220 publications in neurorehabilitation were identified,with there being an overall upward tendency.During this period,the National Natural Science Foundation of China has funded 476 research projects with a total funding of 192.38 million RMB to support neuro rehabilitation research in China.With the support of the National Natural Science Foundation of China,China has made some achievements in neurorehabilitation research.Research related to neurorehabilitation is believed to be making steady and significant progress in China.
基金supported by the National Natural Science Foundation of China(No.81800413 and No.81974048).
文摘Objective The National Natural Science Foundation of China(NSFC)has made great progress in promoting the development of aortic dissection research in recent years.This study aimed to examine the development and research status of aortic dissection research in China so as to provide references for future research.Methods The NSFC projects data from 2008 to 2019 were collected from the Internet-based Science Information System and other websites utilized as search engines.The publications and citations were retrieved by Google Scholar,and the impact factors were checked by the InCite Journal Citation Reports database.The investigator’s degree and department were identified from the institutional faculty profiles.Results A total of 250 grant funds totaling 124.3 million Yuan and resulting in 747 publications were analyzed.The funds in economically developed and densely populated areas were more than those in underdeveloped and sparsely populated areas.There was no significant difference in the amount of funding per grant between different departments’investigators.However,the funding output ratios of the grants for cardiologists were higher than those for basic science investigators.The amount of funding for clinical researchers and basic scientific researchers in aortic dissection was also similar.Clinical researchers were better in terms of the funding output ratio.Conclusion These results suggest that the medical and scientific research level of aortic dissection in China has been greatly improved.However,there are still some problems that urgently need to be solved,such as the unreasonable regional allocation of medical and scientific research resources,and the slow transition from basic science to clinical practice.
基金the Estuary wetland wildlife survey project of the Greater Bay Area of China(Science and Technology Planning Projects of Guangdong Province,2021B1212110002).
文摘The potential of citizen science projects in research has been increasingly acknowledged,but the substantial engagement of these projects is restricted by the quality of citizen science data.Based on the largest emerging citizen science project in the country-Birdreport Online Database(BOD),we examined the biases of birdwatching data from the Greater Bay Area of China.The results show that the sampling effort is disparate among land cover types due to contributors’ preference towards urban and suburban areas,indicating the environment suitable for species existence could be underrepresented in the BOD data.We tested the contributors’ skill of species identification via a questionnaire targeting the citizen birders in the Greater Bay Area.The questionnaire show that most citizen birdwatchers could correctly identify the common species widely distributed in Southern China and the less common species with conspicuous morphological characteristics,while failed to identify the species from Alaudidae;Caprimulgidae,Emberizidae,Phylloscopidae,Scolopacidae and Scotocercidae.With a study example,we demonstrate that spatially clustered bird watching visits can cause underestimation of species richness in insufficiently sampled areas;and the result of species richness mapping is sensitive to the contributors’ skill of identifying bird species.Our results address how avian research can be influenced by the reliability of citizen science data in a region of generally high accessibility,and highlight the necessity of pre-analysis scrutiny on data reliability regarding to research aims at all spatial and temporal scales.To improve the data quality,we suggest to equip the data collection frame of BOD with a flexible filter for bird abundance,and questionnaires that collect information related to contributors’ bird identification skill.Statistic modelling approaches are encouraged to apply for correcting the bias of sampling effort.
基金a phased result of“Research on the New Form of Chinese Human Rights Civilization,”a key project of the National Social Science Foundation of China(project approval No.21AZD095)“Theoretical Interpretation and Discourse Shaping of the Road of Chinese Rights,”a project of the Philosophy and Social Science Research Innovation Team of Jilin University(project approval No.2022CXTD05)。
文摘“China’s Human Rights Science”is undoubtedly a brand-new concept.Just as China has its own philosophy,literature,history,law,political science,and sociology,it should also have its own human rights science.China’s Human Rights Science refers to the cognitive science of human rights in China.Developing its disciplinary system,academic system,and discourse system,and constructing an independent Chinese human rights knowledge system,are essential requirements for promoting the great rejuvenation of the Chinese nation through Chinese modernization and creating a new form of human civilization.China’s Human Rights Science originated in China,grew in China,and deepened through China’s human rights practices.China’s Human Rights Science adhere to the universality of human rights principles and possess distinctive characteristics.It works as the knowledge-based organization,academic refinement,and theoretical expression of the path of human rights development that conforms to the trend of the times and suits China’s national conditions,as pursued by the Communist Party of China in leading the people.China’s Human Rights Science can enrich and develop the theory of human rights civilization,and should become a global public product of human rights.
文摘To improve our health care services,promote balanced development of inter-regional and inter-disciplinary medical care skills,and effectively implement public hospital reform,the former Ministry of Health,State Chinese Medicine Administration Bureau and the Ministry of Finance allocated state funds in 2010 to support a National Clinical Key Specialty Construction Project.The project supports the acquisition of key equipment,personnel training and development of clinical diagnosis technology in order to develop high-quality medical resources and improve clinical services.Because of the important role nursing plays,clinical nursing and specialty care were also included in the project.The Chinese Nursing Association was commissioned to oversee this project,which awarded 211 million RMB to nursing disciplines in 86 hospitals representing all regions of China.This funding has supported the rapid development of nursing disciplines,the results of which are outlined and described in this review.
基金Under the auspices of National Science Fund for Distinguished Young Scholars(No.41125005)
文摘In the knowledge economy era,science and technology(S&T) resources are getting more and more important in shaping regional competiveness and building regional innovation capacity.As such,the spatial distribution of S&T resources is a key to understanding regional development and disparities.By designing an input-output indicator system,this paper develops an evaluation model to examine the spatial distribution of S&T resources in China and assess their spatial efficiency.Moreover,the paper tries to explain spatial differences in the efficiency of S&T resources in China.Major findings are:1) the input and output of S&T resources in China shows a clear T-shaped spatial structure,i.e.,concentrated mainly in the coastal region and along the Changjiang(Yangtze) River;2) the efficiency of S&T resources in China displays strong spatial disparities,with the level of efficiency descending from the east to the west while high efficiency appearing in only several clusters;3) the utilization rates of S&T resources in most provinces are quite low,resulting in low efficiency of S&T resources allocation.The paper suggests that the utilization rate of S&T resources should be raised and the commercialization of S&T outputs should be enhanced to improve the efficiency of S&T resources in China.
文摘Objective This study explains the application number and funding rate of oncology projects undertaken by the National Natural Science Foundation of China(NSFC),with focus on tumor radiotherapy-related research over the past 11 years.Methods A stratified analysis was carried out on the application and funding status of tumor radiotherapy studies in different NSFC project categories,different research areas,and different tumor types.Research areas that required specific focus,such as immunology-related radiotherapy,multimodality imaging and radiomics,and post-radiotherapy organ injury,were separately analyzed.Results The status and development trends of various related research fields were studied,and the research results were presented with the support of the NSFC,in order to provide reference for future applications and funding allocations.Conclusion The number of applications for funding increases every year.Although the total number of funded projects has also increased every year,the funding rate has decreased year by year.Projects on radiotherapy and immunization have been at the forefront in recent years,and the funding rate for these projects increases yearly.
文摘China is a country abundant in lakes. Lake science development in China, not only aims at the international frontiers of correlative subject development, but also focuses on the national strategic needs in different ages. This paper describes the general situation and distribution characteristics of Chinese lakes, systematically reviews development process of Chinese lake science and its progress in lake physics, lake chemistry, lake biology, lake sediment and lake-watershed management, finally looks forward to the developing tendency of Chinese lake science in future.
基金supported by the UK-China Research & Innovation Partnership Fund through the Met Office Climate Science for Service Partnership(CSSP) China as part of the Newton Fund
文摘1. IntroductionThe impacts arising from climate change and climate variability pose major challenges to global and regional security and economic prosperity(UNFCCC,2015).Some regions are more at risk than others, through heightened exposure to climatic hazards, and high vulnerability and exposure to such hazards. China, with its rapid economic development, large and growing population, and frequent occurrence of disasters associated with heavy rainfall, flooding, tropical cyclones,
文摘As a country with one of the world's most rapidly developing economies, China is home to wonderful opportunities for its people and the nation as a whole. An essential element for continued economic prosperity is a water supply of guaranteed quality and quantity, providing critical insurance for food safety, health, and political stability. However, China's economic success has come with serious water resources problems, intensified by human activities and climate change. The nation is now facing extreme levels of water pollution, soil erosion, and sedimentation, along with floods, droughts, and urban storms. Taken together, these impacts have provided a serious headwind to socioeconomic development in China. This article discusses the problems and emerging opportunities for the coming generation of water scientists and engineers.
文摘The early twenty-first century witnessed the publication of the book series Zhongguo kexue jishu shi中国科学技术史(History of science and technology in pre-modern China),which was initiated and organized by the Institute for the History of Natural Sciences,Chinese Academy of Sciences,and compiled by a multitude of Chinese scholars.In comparison with Science and Civilisation in China by Dr.Joseph Needham,Zhongguo kexue jishu shi is superior in the layout characteristics,literature collection,research and explication,field investigation,and simulation experiments.
文摘In the present stage of accelerated development of science and technology at the turn of the century it may be deemed that the geological science in China is destined to prosper, as viewed from the increasing society needs, the scientific problems and the basic technological background provided by the society, the three basic elements for the development of science. Owing to the sagacity and foresight of the founders of geology in China, Chinese geological research had already won a world fame in 1920s to 1930s. From the 1950s to 1970s the geological science in China had undergone a rapid development. From the end of 1970s onwards the geological science in China had undergone an overall development. With the acceptance of the new concept of Earth System Science by the majority of geologists, all branches of geological studies will merge into a comprehensive and coordinate research and the geological science in China will be facing an entirely new stage of development in the 21st century.
文摘(1)Major scientific and technological innovations have been made in the Deep Continental Scientific Drilling Project of the Songliao Basin,Well Songke 2 has a drilling depth of 7018 m.The large-bore coring technology system for ultra-deep wells has overcome major technical problems in deep exploration of the earth,such as ultra-high temperature drilling technology,and has created four world records.Two kinds of clean energy sources with a good exploration and development potential,i.e..