The second part mainly talks of the“letter and visit” institution’s origin and its development,this part first defined the concept of““letter and visit”and others concepts,the evolvement of ancient chinese system of appeal and the development of the system of“letter and visit”in the People’s Replblic of China are narrated in this chapter,in order to offer foreshadowing to the further research of the institution or“letter and visit”.
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This paper offers a critical study on transaction costs from the viewpoint of its origin of thought, its recent development, sources of reality, and methodology of analysis.
本文从思想渊源、近期进展、现实根源和分析方法等方面，对交易费用概念进行批评性考察。
The origin, development and the ultrastructure of secretory cavities in leaf of Ginkgo biloba and its relation to the secretory products were studied under light and electron microscopes.
在光学显微镜和电子显微镜下对银杏叶片分泌腔的发生发育进程、超微结构特征及与分泌物积累的关系进行了系统研究。
This article Outlines the reference service about its origin, conceptions, features, the main forms and the development direction.
本文概括了参考咨询服务的由来、概念、特征、主要形式内容及发展趋势。
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