期刊文献+
共找到4,337篇文章
< 1 2 217 >
每页显示 20 50 100
Research of University Educational Administration System Bottlenecks and Overall Optimization Scheme 被引量:1
1
作者 Lv Shenmin 《International Journal of Technology Management》 2014年第5期74-76,共3页
This paper analyzes of the bottleneck to influence the running efficiency of educational administration system in universities and colleges,and from the system deployment architecture, server configuration, database S... This paper analyzes of the bottleneck to influence the running efficiency of educational administration system in universities and colleges,and from the system deployment architecture, server configuration, database SQL statement optimization and other aspects, it puts forwards the optimization scheme. 展开更多
关键词 university Educational administration system The bottleneck of the system The optimization scheme
下载PDF
The “Dead Universe” Theory: Natural Separation of Galaxies Driven by the Remnants of a Supermassive Dead Universe
2
作者 Joel Almeida 《Natural Science》 2024年第6期65-101,共37页
This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This per... This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This perspective challenges the conventional Big Bang theory, particularly concerning dark matter, the expansion of the universe, and the interpretation of phenomena such as gravitational waves. 展开更多
关键词 Dead universe Theory Heat Death of the universe Big Bang Theory universe’s Ultimate Fate universe Expansion Big Freeze universe Cosmological Models End of universe Theories Natural Galaxy Drift Future of the universe universe Cooling Down Cosmology and Entropy
下载PDF
Solving the Olbers’s Paradox, Explaining the “Red-Shift”, and Challenging the Relativities by “Sun Matters Theory” and “Sun Model of Universe”, an Evolution of the Einstein’s Static Universe Model
3
作者 Wanpeng Sun 《Natural Science》 2024年第2期7-18,共12页
Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used ... Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used to partially explain this paradox, while introducing new problems. Hereby, we propose a better theory, named Sun Matters Theory, to explain this paradox. Moreover, this unique theory supports and extended the Einstein’s static universe model proposed by Albert Einstein in 1917. Further, we proposed our new universe model, “Sun Model of Universe”. Based on the new model and novel theory, we generated innovative field equation by upgrading Einstein’s Field Equation through adding back the cosmological constant, introducing a new variable and modifying the gravitationally-related concepts. According to the Sun Model of Universe, the dark matter and dark energy comprise the so-called “Sun Matters”. The observed phenomenon like the red shift is explained as due to the interaction of ordinary light with Sun Matters leading to its energy and frequency decrease. In Sun Model, our big universe consists of many universes with ordinary matter at the core mixed and surrounded with the Sun Matters. In those universes, the laws of physics may be completely or partially different from that of our ordinary universe with parallel civilizations. The darkness of night can be easily explained as resulting from the interaction of light with the Sun Matters leading to the sharp decrease in the light intensity. Sun Matters also scatter the light from a star, which makes it shining as observed by Hubble. Further, there is a kind of Sun Matters named “Sun Waters”, surrounding every starts. When lights pass by the sun, the Sun Waters deflect the lights to bend the light path. According to the Sun Model, it is the light bent not the space bent that was proposed in the theory of relativities. 展开更多
关键词 Olbers’s Paradox sun Matters Theory sun Model of universe Einstein’s universe Dark Mass
下载PDF
Data from Twenty-Three FRB’s Confirm the Universe Is Static and Not Expanding
4
作者 Lyndon Errol Ashmore 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第3期1152-1177,共26页
Fast Radio Bursts from far away galaxies have travelled through the IGM and provide a tool to study its composition. Presently there are 23 FRB’s whose host galaxies have been identified and the redshift found. This ... Fast Radio Bursts from far away galaxies have travelled through the IGM and provide a tool to study its composition. Presently there are 23 FRB’s whose host galaxies have been identified and the redshift found. This gives us the opportunity to test Dispersion Measure versus redshift predictions made by two models. The Macquart relation for an expanding Universe and the New Tired Light relationship in a static universe. In New Tired Light, redshifts are produced when a photon is absorbed and re-emitted by the electrons in the IGM which recoil on both occasions. Some of the energy of the photon has been transferred to the kinetic energy of the recoiling electron. The photon has less energy, a lower frequency and a longer wavelength. It has been redshifted. Since dispersion is due to an interaction between radio signals and these same electrons one would expect a direct relationship between DM and redshift in the New Tired light model. The relation is DM=(mec/2hre)ln(1+z)and contains no adjustable parameters—just a combination of universal constants related to the electron and photon. Notice that the relation is independent of the electron number density ne since a change in ne affects both the DM and redshift equally. A graph of DM versus ln(1 + z) will be a straight line of gradient (mec/2hre)and, using SI units, substituting for the constants gives 7.318 × 1025 m−2. Using the data from the 23 well localized FRB’s, with the weighting of the DM’s for expansion removed (so that the data corresponds to a static universe), a graph of DM versus ln(1 + z) has a gradient of 6.7 × 1025 m−2—9% below the predicted (mec/2hre). The Macquart relation involves highly processed data and adjustable parameters to allow for “dark energy” and “dark matter” (neither of which has yet been found) and can be reduced to DM = 850z (in units of pc∙cm−3). Using the data from this set of localized FRB’s gives a trendline with gradient 1.10 × 103 pc∙cm−3—almost 30% higher than that predicted in an expanding universe model. The FRB data clearly comes down in favour of a static universe rather than an expanding one. Combining the DM-z relationship for the 23 well localized FRB’s, with the Hubble diagram, drawn using the NED-D compilation of redshift independent extragalactic distances, produces a value of “ne” the mean electron number density of the IGM, of ne=0.48 m−3close to the value ne=0.5 m−3, long since predicted by NTL. 展开更多
关键词 REDsHIFT Dispersion Measure Fast Radio Bursts FRB’s Tired Light static universe IGM
下载PDF
Analysis of the Standardization of Administrative Management in Colleges and Universities Under the Background of Information Technology
5
作者 Wei Wang 《Journal of Contemporary Educational Research》 2023年第4期72-77,共6页
In the development of the information age,universities should recognize the significant impact of information technology on their own development.In practice,it is possible to effectively improve the efficiency and qu... In the development of the information age,universities should recognize the significant impact of information technology on their own development.In practice,it is possible to effectively improve the efficiency and quality of work by dealing with and constructing information-based methods,innovating administrative management models,and adopting more efficient and scientific methods to address various problems and shortcomings encountered in work.As an important part of university management,administrative management is a complex task.Establishing a standardized management model through information technology can further improve the comprehensive efficiency of administrative management.In this regard,the administrative standardization in universities under the background of information technology is analyzed and studied in this paper. 展开更多
关键词 Information background universITIEs administrative management standardization Online publication:April 27 2023
下载PDF
Vasopressor administration in spinal cord injury:should we apply a universal standard to all injury patterns? 被引量:2
6
作者 William J.Readdy Sanjay S.Dhall 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第3期420-421,共2页
Spinal cord injury(SCI)is a devastating pathology,with significant physical,psychosocial,and financial burdens.Despite the severity of this disease,and our deepening understanding of the pathophysiology,we remain li... Spinal cord injury(SCI)is a devastating pathology,with significant physical,psychosocial,and financial burdens.Despite the severity of this disease,and our deepening understanding of the pathophysiology,we remain limited in our treatment options.Recent well-publicized studies have focused on the benefit of early surgical decompression in this patient population, 展开更多
关键词 administration universal deepening decompression devastating severity apply perfusion minute hypotension
下载PDF
Countermeasures Against Job Burnout Among College and University Administrators from the Perspective of Psychological Contract Theory
7
作者 Qingguo Meng Xiaojing Liu 《Journal of Contemporary Educational Research》 2022年第1期25-28,共4页
Administrators are the implementers of the management in colleges and universities;however,their job scopes are relatively boring and complicated,with heavy workload and high work pressure,causing some of them to be l... Administrators are the implementers of the management in colleges and universities;however,their job scopes are relatively boring and complicated,with heavy workload and high work pressure,causing some of them to be less active and slack off in their careers.Therefore,under the guidance of psychological contract theory,colleges and universities should adopt various measures to deal with job burnout among college and university administrators.In this paper,the main causes of job burnout among college and university administrators are analyzed,and specific countermeasures are proposed from the perspective of psychological contract theory,hoping to help college and university administrators improve their work enthusiasm. 展开更多
关键词 Psychological contract theory Colleges and universities administrATORs Job burnout
下载PDF
How to Optimize the Management of Science and Technology Funds in Colleges and Universities Based on the Policy of Streamlining Administration,Delegating Powers,Improving Regulation,and Strengthening Services
8
作者 Rongli Zhou Jie Ji 《Journal of Contemporary Educational Research》 2021年第5期39-43,共5页
To advance the field of science and technology,we need to revitalize the development of science and technology through innovation.The development of science and technology has many beneficial implications on the revit... To advance the field of science and technology,we need to revitalize the development of science and technology through innovation.The development of science and technology has many beneficial implications on the revitalization of the country.For this reason,universities in China should give full attention to their role as the main propeller of science and technology.“Streamlining administration,delegating powers,improving regulation,and strengthening services”is a policy issued by the Chinese government for the management of science and technology funds in colleges and universities.Based on the policy of“streamlining administration,delegating powers,improving regulation,and strengthening services,”colleges and universities must optimize the management of science and technology funds for their efficient use.In this paper,we analyzed the importance of the policy and put forward an effective management strategy,aiming to improve the management of science and technology funds in colleges and universities. 展开更多
关键词 streamlining administration delegating powers improving regulation and strengthening services Colleges and universities Funding for science and technology Management strategy
下载PDF
Protection of Human Rights through Administrative Litigation——An interview with Professor Zhan Zhongle,School of Law,Peking University
9
作者 OUR STAFF REPORTERS 《The Journal of Human Rights》 2008年第6期18-21,共4页
Question: Would you elaborate on the progress China has made under the state policy of reform and opening-up in improving the system of administrative litigation? Answer: Efforts-in this reguard began in 1982, with... Question: Would you elaborate on the progress China has made under the state policy of reform and opening-up in improving the system of administrative litigation? Answer: Efforts-in this reguard began in 1982, with publication of the Law of Civil Procedures (for trial implementation). 展开更多
关键词 Protection of Human Rights through administrative Litigation An interview with Professor Zhan Zhongle school of Law Peking university school
下载PDF
从协同到求异:指向教师专业发展的U-S合作优化研究 被引量:1
10
作者 汪明帅 杨扬 《教师发展研究》 2024年第2期83-90,共8页
U-S合作是教师专业发展的重要举措。审视U-S合作的历程可知,U-S合作致力于多方位促进教师专业发展,协同逐渐成为U-S合作促进教师专业发展的底层逻辑。随着合作的持续推进,这一底层逻辑在促进教师专业发展方面所潜在的矛盾也逐渐暴露出... U-S合作是教师专业发展的重要举措。审视U-S合作的历程可知,U-S合作致力于多方位促进教师专业发展,协同逐渐成为U-S合作促进教师专业发展的底层逻辑。随着合作的持续推进,这一底层逻辑在促进教师专业发展方面所潜在的矛盾也逐渐暴露出来。一方面,大学与中小学的文化差异阻碍了协同的深度发生;另一方面,为了实现大学与中小学的协同,双方不得不做出诸多的妥协,在妥协的语境下,中小学教师往往面临着主体性丧失的风险。与之相对,在求异这一核心理念的引领下,跨界学习旗帜鲜明地提出了“差异即资源”的主张,并通过互动场域的营造和互动系统的建构,为“差异即资源”提供了现实可能,也为优化U-S合作提供了新的思路。 展开更多
关键词 U-s合作 教师专业发展 协同 求异
下载PDF
车辆主动悬架自适应变论域T-S模糊控制研究
11
作者 李韶华 季广港 +1 位作者 冯桂珍 王贺 《振动.测试与诊断》 EI CSCD 北大核心 2024年第4期733-739,828,共8页
针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊... 针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊控制器,利用神经网络的自学习特性产生完善的模糊规则,进而在传统函数型伸缩因子的基础上,将系统误差和误差变化率作为动态参数引入伸缩因子中,实现伸缩因子参数的自适应调整,解决了传统函数型伸缩因子因参数确定难度大导致控制效果差的问题。通过随机工况下的仿真分析和基于相似理论的缩尺实验,对所提出算法的有效性和工况自适应性进行了验证。结果表明,所提出的自适应变论域T-S模糊控制策略具有较强的工况适应性,在不同车速、路面激励下均可有效提高车辆的平顺性并保证轮胎接地安全性。 展开更多
关键词 主动悬架 变论域 伸缩因子 T-s模糊控制 神经模糊系统
下载PDF
U-G-S模式下现代大学附属学校建设的路径思考
12
作者 郭长江 《现代基础教育研究》 2024年第3期23-26,共4页
U-G-S(大学-政府-学校)三方联动是上海师范大学近年来建设现代大学附属学校的主要模式,上海师范大学、各区政府与中小学校高效协同合作,发挥各方优势,主动服务上海市政府建设“五个新城”的城市战略,办老百姓家门口的好学校。大学附属... U-G-S(大学-政府-学校)三方联动是上海师范大学近年来建设现代大学附属学校的主要模式,上海师范大学、各区政府与中小学校高效协同合作,发挥各方优势,主动服务上海市政府建设“五个新城”的城市战略,办老百姓家门口的好学校。大学附属学校分为挂牌学校和新建学校两种类型,研究从内在机制、实践路径和建设成效三个方面对两类学校的变革发展进行深度剖析,以期为大学附属学校建设提供宝贵经验。 展开更多
关键词 U-G-s模式 建设路径 大学附属学校
下载PDF
Impacts of different methylprednisolone administration routes in patients with sudden hearing loss or Meniere’s disease 被引量:4
13
作者 Dan Chen Zhipeng Li +5 位作者 Qilin Zhou Yubin Chen Luoying Yang Jingqian Tan Xiangli Zeng Peng Li 《Journal of Otology》 CSCD 2020年第4期149-154,共6页
Background:Evidence suggests that glucocorticoids are important in the treatment of sudden hearing loss(SHL)and Meniere’s disease(MD).However,different glucocorticoid administration methods may have a significant imp... Background:Evidence suggests that glucocorticoids are important in the treatment of sudden hearing loss(SHL)and Meniere’s disease(MD).However,different glucocorticoid administration methods may have a significant impact on treatment outcomes.Objective:This study aimed to investigate effects of different glucocorticoid administration methods on sudden hearing loss and Meniere’s disease.Methods:In this study,glucocorticoids were administered orally in 18 patients,by retroauricular injection in 15 patients and by intratympanic injection in 15 patients.White blood cell(WBC)count,serum Kt,fasting plasma glucose(FPG),body temperature,heart rate and blood pressure were used to evaluate effects of glucocorticoids on patients with hearing loss.Visual analog scale(VAS)of pain and sleep disorders were also surveyed,and pure tone audiometry(PTA)results were compared among groups to evaluate efficacy of different glucocorticoids administration methods.Result:WBC count,heart rate and blood pressure were higher in patients taking oral glucocorticoids,while body temperature,serum Kt and FPG levels did not change in all three groups.However,patients who received intratympanic injection of glucocorticoids experienced more pain,while those taking oral glucocorticoids reported more sleep impairment.Treatment efficacy on hearing loss was not significantly different among the three groups.Conclusion:These findings suggest that systemic glucocorticoid administration can result in greater whole body responses than local administration,but with similar hearing treatment efficacy. 展开更多
关键词 sudden hearing loss Meniere’s disease GLUCOCORTICOIDs administration method Overall response
下载PDF
Standardization Administration of the People's Republic of China(SAC) 被引量:3
14
《China Standardization》 2011年第1期29-29,共1页
1. To draft and revise the state laws and regulations on standardization, to formulate and implement the policies on standardization; to formulate the national administrative rules on standardization and develop relev... 1. To draft and revise the state laws and regulations on standardization, to formulate and implement the policies on standardization; to formulate the national administrative rules on standardization and develop relevant systems; to organize the implementation of laws, rules and systems on standardization: 展开更多
关键词 sAC IEC standardization administration of the People’s Republic of China
下载PDF
PROVISIONS OF THE CUSTOMS OF THE PEOPLE’S REPUBLIC OF CHINA ON EXTERNAL AUDIT AND CERTIFICATE OF EXTERNAL AUDIT ISSUED RECENTLY BY THE GENERAL ADMINISTRATION OF CUSTOMS OF THE PEOPLE’S REPUBLIC OF CHINA 被引量:1
15
《大经贸》 北大核心 1997年第6期93-93,共1页
In accordance with the regulations as stipulated in the Pro-visions of the Customs of the People’s Republic of China on Ex-ternal Audit, the Customs officers engaged in external audit shalluse the Certificate of Exte... In accordance with the regulations as stipulated in the Pro-visions of the Customs of the People’s Republic of China on Ex-ternal Audit, the Customs officers engaged in external audit shalluse the Certificate of External Audit of the Customs (hereinafterreferred to as Certificate) as of June 5, 1997. The Certificate has ablack leather outer covering and is inlaid inside with a pierced andguilded customs emblem, which consists of the red national em-blem in its upper part, and a key and a truncheon encircled by earsof wheat in its lower part. Put in a leather covering, the Certificateis a card sealed up with plastics, on which there is a bareheadedcolour photo of the holder in the Customs uniform and with a 展开更多
关键词 Pro PROVIsIONs OF THE CUsTOMs OF THE PEOPLE s REPUBLIC OF CHINA s REPUBLIC OF CHINA ON EXTERNAL AUDIT AND CERTIFICATE OF EXTERNAL AUDIT IssUED RECENTLY BY THE GENERAL administration OF CUsTOMs OF THE PEOPLE
下载PDF
Management Communication in University’s Digital Library
16
作者 LIU Yuan fang 1, LIN Li 2 (1. Library of Dalian University of Technology, Dalian 116024, China 2. 21 st Century Development and Research Center, Dalian 116023) 《上海交通大学学报》 EI CAS CSCD 北大核心 2003年第S1期250-254,共5页
Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surro... Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surroundings for knowledge accumulation, knowledge transfer and knowledge communication. Management communication covers information transfer and organization cooperation. Compared with traditional library, the management communication in digital library shoulders the commitment to support knowledge innovation. On the basis of analysis of the connotation of digital library, this paper analysed the aspects of management communication, including communicators, communication styles, contents, channels and outer communication, all of which tries to construct an integrated model of management communication in a digital library and turns a library into an actual “knowledge fountain”. 展开更多
关键词 university’s DIGITAL LIBRARY KNOWLEDGE MANAGEMENT MANAGEMENT COMMUNICATION
下载PDF
“优师计划”背景下师范生U-G-S培养模式价值、问题及对策
17
作者 尹婷婷 蒋丽 高鹏飞 《唐山师范学院学报》 2024年第3期106-109,共4页
从“优师计划”背景下师范生U-G-S培养模式价值分析入手,剖析“优师计划”背景下师范生U-G-S培养模式中地方政府、师范院校、中小学校、师范生四个基本要素各自存在问题,提出“四位一体”师范生U-G-S培养模式提升对策,以当地政府为主导... 从“优师计划”背景下师范生U-G-S培养模式价值分析入手,剖析“优师计划”背景下师范生U-G-S培养模式中地方政府、师范院校、中小学校、师范生四个基本要素各自存在问题,提出“四位一体”师范生U-G-S培养模式提升对策,以当地政府为主导、以师范院校为引领、以中小学校为核心、以师范生为主体,统筹各方培养资源和优势力量,激活多方利益主体意愿,助力乡村卓越教师的培养。 展开更多
关键词 “优师计划” 师范生 U-G-s培养模式
下载PDF
Hubble Tension Explanation from This Cosmological Model AΛΩ (Slow Bang Model, SB)
18
作者 Jean Perron 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第1期106-125,共20页
In this article we present a model of Hubble-Lemaître law using the notions of a transmitter (galaxy) and a receiver (MW) coupled to a model of the universe (Slow Bang Model, SB), based on a quantum approach of t... In this article we present a model of Hubble-Lemaître law using the notions of a transmitter (galaxy) and a receiver (MW) coupled to a model of the universe (Slow Bang Model, SB), based on a quantum approach of the evolution of space-time as well as an equation of state that retains all the infinitesimal terms. We find an explanation of the Hubble tension H<sub>0</sub>. Indeed, we have seen that this constant depends on the transceiver pair which can vary from the lowest observable value, from photons of the CMB (theoretical [km/s/Mpc]) to increasingly higher values depending on the earlier origin of the formation of the observed galaxy or cluster (ETG ~0.3 [Gy], ~74 [km/s/Mpc]). We have produced a theoretical table of the values of the constant according to the possible pairs of transmitter/receiver in the case where these galaxies follow the Hubble flow without large disturbance. The calculated theoretical values of the constant are in the order of magnitude of all values mentioned in past studies. Subsequently, we applied the models to 9 galaxies and COMA cluster and found that the models predict acceptable values of their distances and Hubble constant since these galaxies mainly follow the Hubble flow rather than the effects of a galaxy cluster or a group of clusters. In conclusion, we affirm that this Hubble tension does not really exist and it is rather the understanding of the meaning of this constant that is questioned. 展开更多
关键词 Model of the universe Cosmological Constant Hubble Constant Hubble’s Tension Hubble-Lemaître Law Hubble’s Flow
下载PDF
The Liberal Hawks and the China Strategy of the Biden Administration
19
作者 Zhang Zhaoxi 《Contemporary International Relations》 2022年第6期73-94,共22页
Since the Biden administration came to power, the liberal hawks who uphold the liberal internationalist strategy have regained a significant influence on foreign affairs and national security, prioritized the repair o... Since the Biden administration came to power, the liberal hawks who uphold the liberal internationalist strategy have regained a significant influence on foreign affairs and national security, prioritized the repair of U.S. hegemony, and maintained strategic competition with China initiated by the Trump administration. When compared with the paradigm of competition of the Trump administration, the liberal hawks of the Biden administration have improved the strategic logic of competition with China and refined the relevant policy layout to render it compatible with the overall agenda of the Democratic Party. Enhancing strategic competition with China under the leadership of the liberal hawks has not been in the interests of China, the United States(U.S.), or the entire world. The healthy and stable development of China–U.S. relations requires additional rational and pragmatic policies from the side of the U.S. 展开更多
关键词 liberal hawks Biden administration China-U.s.relations strategic competition
下载PDF
Experience with intraoperative radiotherapy for breast cancer: the Geneva University Hospital's experience
20
作者 Emanuela Esposito Michael Douek 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2016年第4期463-466,共4页
Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast cons... Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast conserving surgery has been shown to improve survival by preventing local recurrence, in the Early Breast Cancer Trialists' Collaborative Group meta-analysis (2). Standard radiotherapy typically requires numerous fractions over a 3-5 week period and is performed weeks or months after surgery or chemotherapy. 展开更多
关键词 IORT Experience with intraoperative radiotherapy for breast cancer the Geneva university Hospital’s experience
下载PDF
上一页 1 2 217 下一页 到第
使用帮助 返回顶部