期刊文献+
共找到539篇文章
< 1 2 27 >
每页显示 20 50 100
实现SPIRITS的关键问题研究
1
作者 桂文明 张顺颐 沈苏彬 《数据通信》 2001年第4期49-51,62,共4页
SPIRITS提供了智能网与 Internet互通的又一种模型 (从 PSTN/ IN请求 Internet业务 )。本文简要介绍了 SPIRITS标志性业务及体系结构 ,着重对实体之间使用的服务及原语作了阐述、归类 ,并给出了使用 SIP实现的业务流程 ;讨论了实现的细... SPIRITS提供了智能网与 Internet互通的又一种模型 (从 PSTN/ IN请求 Internet业务 )。本文简要介绍了 SPIRITS标志性业务及体系结构 ,着重对实体之间使用的服务及原语作了阐述、归类 ,并给出了使用 SIP实现的业务流程 ;讨论了实现的细节 ,提出用 XML实现 INAP在SIP报文体中的表示。 展开更多
关键词 spirits 可扩展标记语言 智能网 因特网 网络互通
下载PDF
一种基于扩展HTTP的SPIRITS协议方案
2
作者 邓作杰 程京 谭小兰 《湖南工程学院学报(自然科学版)》 2005年第3期58-61,共4页
IETF的SPIRITS方案提出了从IN端向Internet端请求业务的概念.当前IETF只定义了SPIRITS体系结构,并加紧研究SPIRITS协议.通过对SPIRITS体系结构和HTTP协议的分析,本文提出了一种基于扩展HTTP的SPIRITS协议方案,这种方案具有简单、方便、... IETF的SPIRITS方案提出了从IN端向Internet端请求业务的概念.当前IETF只定义了SPIRITS体系结构,并加紧研究SPIRITS协议.通过对SPIRITS体系结构和HTTP协议的分析,本文提出了一种基于扩展HTTP的SPIRITS协议方案,这种方案具有简单、方便、快速实现的优点. 展开更多
关键词 HTTP spirits协议 方案
下载PDF
Application of the new pattern recognition system in the new e-nose to detecting Chinese spirits 被引量:2
3
作者 谷宇 李强 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第4期330-334,共5页
We present a new pattern recognition system based on moving average and linear discriminant analysis (LDA), which can be used to process the original signal of the new polymer quartz piezoelectric crystal air-sensit... We present a new pattern recognition system based on moving average and linear discriminant analysis (LDA), which can be used to process the original signal of the new polymer quartz piezoelectric crystal air-sensitive sensor system we designed, called the new e-nose. Using the new e-nose, we obtain the template datum of Chinese spirits via a new pattern recognition system. To verify the effectiveness of the new pattern recognition system, we select three kinds of Chinese spirits to test, our results confirm that the new pattern recognition system can perfectly identify and distinguish between the Chinese spirits. 展开更多
关键词 new pattern recognition system new e-nose detecting Chinese spirits
下载PDF
The Effects of Liquor Spirits on RNA Pol III Genes and Cell Growth of Human Cancer Lines 被引量:1
4
作者 Yunfeng Yi Junxia Lei +5 位作者 Ganggang Shi Songlin Chen Yanmei Zhang Zaifa Hong Zhimin He Shuping Zhong 《Food and Nutrition Sciences》 2018年第3期208-220,共13页
Alcohol consumption is a major health issue and associated with human cancers, such as liver and breast cancers. Alcohol was classed as carcinogen to human by IARC. We have performed in vivo and in vitro studies which... Alcohol consumption is a major health issue and associated with human cancers, such as liver and breast cancers. Alcohol was classed as carcinogen to human by IARC. We have performed in vivo and in vitro studies which demonstrate that diluted ethanol promotes cell proliferation and transformation and tumor formation. Consumption of liquor spirits (white wines) is a popular behavior. However, it is unclear whether liquor spirits affect cellular phenotypes of human cancers. At present study, we used diluted ethanol and liquor spirits (Sample #1 and Sample #2) to determine the changes in RNA polymerase III-dependent gene (Pol III gene) transcription, cell growth and colony formation in the different human cancer lines. The results indicate that low concentration of ethanol increases RNA Pol III gene transcription and rate of cell growth. However, both liquor spirits (Sample #1 and Sample #2) inhibit the activity of RNA Pol III genes and repress cell proliferation of the cancer lines, compared to diluted ethanol. The liquor spirits reduce the rate of colony formation of human breast cancer cells and esophageal carcinoma cells. The inhibitions of the liquor spirits to RNA Pol III genes, cell growth and colony formation are in a dose-dependent manner. These new findings suggest that the liquor spirits contain some active components to repress Pol III gene transcription and cell growth caused by ethanol in different human cancer cells. 展开更多
关键词 ETHANOL LIQUOR spirits Cancer Cells POL III GENES Cell Growth COLONY Formation
下载PDF
SPIRITS业务在现代企业中的应用
5
作者 王雪梅 《中国数据通信》 2004年第4期104-106,共3页
SPIRITS业务通过事件的定制/通告机制,利用PSTN/IN内的事件触发,进一步开展因特网应用流程,实现PSTN/IN与Internet在业务层面上的互联互通。本文在介绍SPIRTIS的三种标志性业务、体系结构以及业务工作流程的基础上,结合现代企业的具体要... SPIRITS业务通过事件的定制/通告机制,利用PSTN/IN内的事件触发,进一步开展因特网应用流程,实现PSTN/IN与Internet在业务层面上的互联互通。本文在介绍SPIRTIS的三种标志性业务、体系结构以及业务工作流程的基础上,结合现代企业的具体要求,介绍了SPIRITS业务在企业人员高度和热线来话监控方面的应用。 展开更多
关键词 spirits 因特网 互联互通 PSTN/IN 智能网 ICW
下载PDF
The Universal Declaration of Human Rights and the “Spirits” of Confucian Ethics 被引量:1
6
作者 黄爱教 LI Man(译) 《The Journal of Human Rights》 2018年第5期518-531,共14页
At present, the value revealed in the Universal Declaration of Human Rights is under attack, and the consensus on human rights value is experiencing division globally,which asserts that "human rights can only be ... At present, the value revealed in the Universal Declaration of Human Rights is under attack, and the consensus on human rights value is experiencing division globally,which asserts that "human rights can only be provided by paradox". The root of this is that" reason ",the metaphysical nature of human rights proclaimed in the Universal Declaration of Human Rights,is infinitely magnified while the " spirit " is ignored. History and philosophy show that the Universal Declaration of Human Rights entails the Confucian ethical " spirit ".At this time,this potential factor is gradually emerging in the course of world history and became a force to bridge the global division of human rights values. The significance of Confucian ethics " spirit " to the Universal Declaration of Human Rights lies in: from the perspective of " spirit ", its holistic view, bridging individual rights and collective rights; its relational view focuses on the realization of human rights and transcends the " paradox of human right; progressing from the value consensus to common action, so that in the process of judging the progress of human rights in the world, we consider not only the value consensus, but also the common action. 展开更多
关键词 Universal Declaration of Human Rights human rights Confucian Ethnics Reason "spirits"
下载PDF
Chinese Spirits Identification Model Based on Mid-Infrared Spectrum
7
作者 Wu Zeng Zhanxiong Huo +2 位作者 Yuxuan Xie Yingxiang Jiang Kun Hu 《Computers, Materials & Continua》 SCIE EI 2020年第9期1869-1883,共15页
Applying computer technology to the field of food safety,and how to identify liquor quickly and accurately,is of vital importance and has become a research focus.In this paper,sparse principal component analysis(SPCA)... Applying computer technology to the field of food safety,and how to identify liquor quickly and accurately,is of vital importance and has become a research focus.In this paper,sparse principal component analysis(SPCA)was applied to seek sparse factors of the mid-infrared(MIR)spectra of five famous vintage year Chinese spirits.The results showed while meeting the maximum explained variance,23 sparse principal components(PCs)were selected as features in a support vector machine(SVM)model,which obtained a 97%classification accuracy.By comparison principal component analysis(PCA)selected 10 PCs as features but only achieved an 83%classification accuracy.Although both approaches were better than a direct SVM approach based on the classification results(64%classification accuracy),they also demonstrated the importance of extracting sparse PCs,which captured most important information.The combination of computer technology SPCA and MIR provides a new and convenient method for liquor identification in food safety. 展开更多
关键词 Mid-infrared spectra Chinese spirits SPCA SVM liquor identification
下载PDF
Extraction of Antioxidant Total Phenol from Lees of Xiaoqu Spirits
8
作者 Xinzhi Cao Fang Liu +2 位作者 Jia Liu Xiao Tan Linsheng Ren 《Food and Nutrition Sciences》 2015年第11期1022-1028,共7页
By the Soxhlet extraction, ethanol is used as extraction solvent of lees to determinate the total phenol content of Xiaoqu spirits lees. Folin-phenol method is handled to extract and to determine the reducing ability ... By the Soxhlet extraction, ethanol is used as extraction solvent of lees to determinate the total phenol content of Xiaoqu spirits lees. Folin-phenol method is handled to extract and to determine the reducing ability of extraction. The total phenolic content in the most suitable condition is determinated by the Folin-phenol method and the optimum extraction technological condition of total phenol is determinated by the experiment. The experimental results show that the optimization conditions of the determination methods of total phenolic content are determined by 3.5 mL for the Folin phenol reagent, 1:1 for the 10% Na2CO3 ratio and 30 min for the chromogenic reaction at room temperature. The optimum extraction technological condition of total phenol from lees is as following: solid-liquid ratio 1:12, ethanol concentration 100%, extraction temperature 80℃, extraction time 10 h. 展开更多
关键词 Xiaoqu spirits LEES EXTRACTION TOTAL PHENOLS
下载PDF
Gather Wisdom and Strength of the Whole Society with the Spirits of Model,Labor and Craftsman
9
作者 Su Yong 《Journal of Contemporary Educational Research》 2018年第1期34-39,共6页
Nowadays,as the globalization deepens,different civilizations around the globe have been gradually permeated into each other.The spirits of model,labor and craftsmanship represent new spiritual cultural strengths in t... Nowadays,as the globalization deepens,different civilizations around the globe have been gradually permeated into each other.The spirits of model,labor and craftsmanship represent new spiritual cultural strengths in the development of the contemporary society in China.Therefore,carrying forward these three spirits is conducive to spreading the unique Chinese culture brand to the whole world,and to making Chinese culture better to be present on the world stage and better-known to people of the whole world.This paper mainly analyzes the specific connotation and problems confronted by the spirits of model workers,labor and craftsmanship in the new era in China.Under such a context,the following important countermeasures are raised to provide theoretical help for better carrying forward these spirits in China. 展开更多
关键词 SPIRIT of MODEL workers SPIRIT of LABOR SPIRIT of craftsmanship
下载PDF
On Chris's Unyielding Spirits Against Fate in The Pursuit of Happyness
10
作者 BAO Ruo-jun 《Journal of Literature and Art Studies》 2016年第8期905-910,共6页
The Pursuit of Happyness has always been a well-received film ever since its release in 2006. This film mainly describes how a black American worms his way from the bottom of the society to success. This paper intends... The Pursuit of Happyness has always been a well-received film ever since its release in 2006. This film mainly describes how a black American worms his way from the bottom of the society to success. This paper intends to make a detailed description of the life experience of the main character, including his life obstacles and fighting. It also expounds on the image of the main character. Moreover, through the analysis of the reasons why Chris, an average American with his unyielding spirits, succeeds in seizing his happiness through sorrow and pain in life, the practical significance with regard to individual and social development is put into the limelight. 展开更多
关键词 unyielding spirit HAPPINESS fighting against fate individual and social development
下载PDF
Study on the Spirits of University Teachers
11
作者 QIN Xiaogang 《International English Education Research》 2015年第10期45-47,共3页
The paper intends to study the formation of the spirit of independence, curiosity, innovation and benevolence which the university teachers in Medieval Europe had under the specific social and historical conditions. B... The paper intends to study the formation of the spirit of independence, curiosity, innovation and benevolence which the university teachers in Medieval Europe had under the specific social and historical conditions. Based on this, by contrast the current crisis of spirits of medieval university teachers in modem society, the paper also analyzes the reasons and tries to find out the mechanism to cultivate the spirit of the university teachers in modem society. 展开更多
关键词 Universities in Medieval Europe SPIRIT university spirit spirit of university teachers
下载PDF
Game Spirits in the American Youngsters Series--Take Harry Potter and The Hunger Games as Examples
12
作者 ZHANG Jie 《Sino-US English Teaching》 2016年第4期302-307,共6页
The series of Harry Potter and the series of The Hunger Games are the most frequently mentioned children's and youngster's stories after The Adventures of Tom Sawyer. Both of them are children's and youngster's fa... The series of Harry Potter and the series of The Hunger Games are the most frequently mentioned children's and youngster's stories after The Adventures of Tom Sawyer. Both of them are children's and youngster's favorite stories. All of them are about children's adventures. But because of the time and history, they represent different themes of the time. This research paper aims at analyzing the Game Spirits in the first two. The suspense and surprise, fantastic adventures and time interweaving are shown in Harry Potter and the Prisoner of Azkaban. And the unbelievable background, the lucky number, image of gamble, and the game against humanity are the Game Spirits in The Hunger Games. The purpose of this thesis is to help people better understand Harry Potter and The Hunger Games in the aspect of Game Spirit. Harry Potter is the full of fantastic adventure while The Hunger Game is a story full of survival. 展开更多
关键词 Game Spirit the Harry Potter series children literature suspense and surprise adventures suspense and surprise J. K. Rowling
下载PDF
The Birth of Modern Poetry:Tradition and Individual Talent——An Understanding of T. S. Eliot's Critical Essay‘Tradition and Individual Talent'in comparison with Nietzsche's Spirits of Tragedy
13
作者 熊若琳 《海外英语》 2019年第2期210-213,共4页
As one of the most significant critical essays of T.S.Eliot,Tradition and Individual Talent has defined writing as a process during which the primitive oneness has seized the individual writer of figurative descriptio... As one of the most significant critical essays of T.S.Eliot,Tradition and Individual Talent has defined writing as a process during which the primitive oneness has seized the individual writer of figurative descriptions to help represent itself.This theory has latter been practiced in Eliot’s Wasteland,and shows its similarity with The Birth of Tragedy,written by Friedrick Nietzsche,the German philosopher.Eliot’s‘tradition’has been concluded by Nietzsche as‘Dionysian Spirit’,which represents oneness transcending good and evil,past and present,while‘individual talent’has resembled‘Apollonian Spirit’in the urge for original figuration as an apparatus.The paper aims to explain and compare the definitions of‘tradition’and‘individual talent’of Eliot’s work with that of‘Dionysian spirit’and‘Apollonian Spirit’in Nietzsche’s illustrations,so as to provide a deeper understanding of these two works by unveiling the individual and social sameness and difference of Eliot and Nietzsche. 展开更多
关键词 T.S.Eliot Friedrick NIETZSCHE TRADITION TRADITION and INDIVIDUAL TALENT TRAGEDY Dionysian Spirit Modernity
下载PDF
Effect of Different Raw Material Processing Methods on the Quality of Apple Distilled Spirits
14
作者 YU Zhi-hai PU Jiang-hua +5 位作者 BAN Zhen-zhu ZHAO He-xiang HUANG Gui-dan HUANG Xiao-yan SHI Ming-zhi HUANG Ming-zheng 《Agricultural Science & Technology》 CAS 2024年第2期44-50,共7页
In this study,the effect of yeast strains(X16 and RMS2),fruit seed,and pectinase on the quality of apple distilled spirits were investigated with apple as material.The results showed that pectinase shortened the ferme... In this study,the effect of yeast strains(X16 and RMS2),fruit seed,and pectinase on the quality of apple distilled spirits were investigated with apple as material.The results showed that pectinase shortened the fermentation period.The strain X16,fruit seed remaining,and pectinase addition groups had higher yields of crude distilled spirits than the strain RMS2,fruit seed removal,and without pectinase groups,respectively.Regarding the first-grade distilled spirits quality,the X16 group had higher content of total acids,total esters,higher alcohols,and alcohol content than the RMS2 group;the group with fruit seeds had higher total acids but lower alcohol content and total esters than the group with fruit seed removal;the group with pectinase addition had higher total acids and alcohol content than the group without pectinase addition.Regarding the second-grade distilled spirits quality,the X16 group had higher total acids,total esters,and alcohol content than the RMS2 group;the group without fruit seeds had higher alcohol content than the group with fruit seeds;the group with pectinase addition showcased higher total acids but lower alcohol content than the group without pectinase addition.In summary,yeast strains and pectinase affected the quality of apple distilled spirits,and strain X16 was more suitable for brewing apple distilled spirits.Pectinase affected the quality of apple distilled spirits by affecting fermentation rate and temperature. 展开更多
关键词 Apple distilled spirits Yeast strains Fruit seeds Pectinase
下载PDF
Tenacious Spirits
15
作者 Lv Weitao 《China Weekly》 2023年第10期53-55,共3页
A nearly 400-year-old collection of supernatural tales has found new popularity through a hit song inspired by its timeless social satire.NewsChina explores how storyteller Pu Songling's repeated failures in life ... A nearly 400-year-old collection of supernatural tales has found new popularity through a hit song inspired by its timeless social satire.NewsChina explores how storyteller Pu Songling's repeated failures in life spelled success for his posthumous masterwork. 展开更多
关键词 SPIRIT STORY POPULARITY
原文传递
Clinical efficacy of acupuncture at “five spirits acupoints” in treatment of insomnia 被引量:3
16
作者 陆永辉 吴承臻 《World Journal of Acupuncture-Moxibustion》 CSCD 2016年第3期14-16,30,共4页
Objective To observe the clinical efficacy of acupuncture at "five spirits acupoints" in treatment of insomnia. Methods The insomnia patients conforming to the diagnostic criteria were included into the study of "f... Objective To observe the clinical efficacy of acupuncture at "five spirits acupoints" in treatment of insomnia. Methods The insomnia patients conforming to the diagnostic criteria were included into the study of "five spirits acupoints", and statistical analysis was conducted over the 65 patients who completed the courses of treatment. Shéntíng(神庭 GV 24), Běnshén(本神 GB 13), Sìshéncōng(四神聪 EX-HN 1), Shéndào(神道 GV 11) and Shénmén(神门 HT 7) were selected. Manipulation: perpendicular insertion was conducted at GV 11 and HT 7, and transverse insertion was conducted at GV 24, GB 13 and EX-HN 1, with the acupuncture depth of 10–15 mm. Even reinforcing and reducing method was applied. Needles were retained at all the selected acupoints, except GV 11, for 25 min. The treatment was conducted every other day, and treatment for 10 times was considered as one course of treatment. After one course, the changes of PSQI, the time to fall asleep, sleep time and soporific dosage were observed before and after treatment. Results According to the comparison before and after treatment, the mean deviation of PSQI, the time to fall asleep, sleep time and soporific dosage were 10.02±1.75,(0.7±0.5) h,(2.1±1.5) h and(10.3±2.5) mg, respectively, all P〈0.05, and the differences were all significant. Conclusion Acupuncture at "five spirits acupoints" in treatment of insomnia can improve patients’ sleep quality, shorten the time to fall asleep, prolong the actual sleep time, and reduce soporific dosage. With few acupoints selected, superficial needling and small stimulation, acupuncture at "five spirits acupoints" has better efficacy and is easy to be accepted by patients. 展开更多
关键词 INSOMNIA ACUPUNCTURE treatment of spirit acupuncture therapy
原文传递
Entrepreneurial Spirit for China in the New Era and Strategies for Cultivation
17
作者 Xu Yuanhua He Jun +1 位作者 Sun Zao Li Xiaoke 《China Economist》 2024年第5期48-59,共12页
What type of entrepreneurial spirit is needed for China’s new era,and how can we unlock its innovation potential?Answers to these questions will unleash vital forces to drive China’s high-quality economic developmen... What type of entrepreneurial spirit is needed for China’s new era,and how can we unlock its innovation potential?Answers to these questions will unleash vital forces to drive China’s high-quality economic development.After reviewing the theories,dimensions,features,and limitations of the entrepreneurial spirit in the Western context,we concluded that the entrepreneurial spirit in China’s new era,which is characterized by patriotism,innovation,trustworthiness,adherence to the law,fulfillment of social responsibilities,and a global horizon,has overcome the limitations that come with self-interested entrepreneurship in the context of Western economics.This is a major step forward in the development of theories on entrepreneurial spirit.In the development context of the new era,this paper argues that the entrepreneurial spirit should become an important force at the individual level to implement the new development concept,foster the new development paradigm,and promote high-quality development in the new stage.This paper provides answers to the question of what type of entrepreneurial spirit China’s new era requires.Finally,this paper presents basic strategies for cultivating entrepreneurial spirit in the context of China’s new era,emphasizing the importance to promote the healthy growth of young entrepreneurs,ensure their business autonomy,develop a multi-tiered capital market,implement the factor market reforms,improve the business climate,and accelerate the digital transition. 展开更多
关键词 Context of China’s new era context of Western economics entrepreneurial spirit high-quality development cultivation strategy
下载PDF
先进制造标准国际化工作研讨会在北京召开
18
《China Standardization》 2024年第2期9-9,共1页
The meeting on the standards internationalization work of advanced manufacturing was recently held in Beijing, with the aim to thoroughly implement the spirits for institutional opening up of the 20th CPC National Con... The meeting on the standards internationalization work of advanced manufacturing was recently held in Beijing, with the aim to thoroughly implement the spirits for institutional opening up of the 20th CPC National Congress, and accelerate improving the internationalization of standards in the field of advanced manufacturing. 展开更多
关键词 标准国际化 thoroughly SPIRIT
下载PDF
From Differential Mode of Association to Tianxia Worldview:A Study on Chinese Entrepreneurial Spirit
19
作者 Chao Gang Qian Chen Wang Lei 《China Economist》 2024年第4期58-88,共31页
China has made significant strides in economic and social development since reform and opening up over the past four decades.This process has been influenced by the exceptional innovation and entrepreneurship of Chine... China has made significant strides in economic and social development since reform and opening up over the past four decades.This process has been influenced by the exceptional innovation and entrepreneurship of Chinese business leaders,as well as their profound sentiments of compassion for the world and their country.It is of great significance to foster and promote an entrepreneurial spirit with distinctive Chinese characteristics.Not only is such spirit essential to the high-quality development of enterprises and the economy,but it is also a critical impetus for achieving Chinese modernization.Nevertheless,there is still a paucity of adequate theoretical discourse on the cultural origins and entrepreneurial spirit of outstanding Chinese business leaders.This paper employs the classical grounded theory method to conduct a 10-year follow-up research on 11 representative entrepreneurs and their enterprises.The results indicate that these entrepreneurs exhibit an evolving worldview along the paths of“self-cultivation and moral conduct”,“assisting employees to achieve”,“multilateral symbiosis”,and“the oneness of existence”when interacting with themselves,employees,partners,the general public,and all things in nature.Such entrepreneurial spirit is embodied in this paper as the“Tianxia(all-under-heaven)worldview”.Through theoretical construction,this study defines the concept of“Tianxia worldview”and extensively examines the distinctions and connections between the broadminded“Tianxia worldview”and the kinship-centered“differential mode of association”in terms of internal structure,value orientation,and applicable groups.It is posited that the transition from the former to the latter is a continuous process of transcendence and evolution of the individual mindset.This study has theoretical significance in the context of advancing the research on the Chinese entrepreneurial spirit,transcending the constraints of the management approach based on the“differential mode of association”,and enhancing the research on social responsibility from the perspective of“benefit corporations”.It also has practical value in overcoming the trust dilemma and development impediment of family businesses,ensuring that enterprises consciously fulfill their social responsibilities in a broader social context,and achieving common prosperity and progress for both enterprises and society. 展开更多
关键词 Tianxia worldview differential mode of association Chinese entrepreneurial spirit corporate social responsibility grounded theory method
下载PDF
Scouting for Talents
20
作者 HUANG YUHAO 《China Today》 2024年第10期14-17,共4页
President Xi Jinping calls for greater efforts to make China a talent-strong country.COUNTRIES are competing to attract talents-as seen in the U.K.’s launching the Global Talent Visa and Singapore announcing the Tech... President Xi Jinping calls for greater efforts to make China a talent-strong country.COUNTRIES are competing to attract talents-as seen in the U.K.’s launching the Global Talent Visa and Singapore announcing the Tech@SG Programme.With a population of over 1.4 billion,China is also eager to attract talents,having a long tradition of valuing talents,as reflected in the Chinese idiom“Seek talents as if you are thirsty.”In recent years,Chinese President Xi Jinping has frequently emphasized the topic of talent,with three points standing out:the spirit of scientists,a favorable environment for talents,and promoting related international exchange and cooperation. 展开更多
关键词 SINGAPORE SPIRIT favorable
下载PDF
上一页 1 2 27 下一页 到第
使用帮助 返回顶部