Furthermore , the study of chinese origins of civilization probably can provide a new angle for analysis on divisions of chinese history , which is trapped now 此外，中国文明起源研究还很有可能为陷入困境的中国历史分期研究开辟出一条新路。
Centering on the history distinction stage by stage , the launched cause , the " da - zhai spirit " , and the history evaluation of " emulating da - zhai on agriculture " campaign , academic circles set off an enthusiastic discussion 围绕“农业学大寨”运动的历史分期、发动原因、 “大寨精神”以及“农业学大寨”运动的历史评价问题，学术界展开了广泛的讨论。
There are two parts in this thesis . in the first part , a summary of the development of the materials above is drawn according to the historical period , striding over the time from debut of them to nowadays . meanwhile , different changes and characteristics are analyzed according to different periods of press activities and management 全文分为两部分第一部分搜集“两刊一报”从创刊到现阶段的历史资料，按照历史分期介绍“两刊一报”的发展进程，同时，从内容、形式上总结各阶段新闻业务的新变化、新特点。
The conceptual framework is centered upon two themes : the evolution of human societies and their reciprocal interactions ; the spatial framework is provided by the constant use of thematic planispheres ; the temporal framework is articulated on a periodization based upon 9 eras , with an additional one dealing with future perspectives 概念框架集中于两个主题：人类社会的演进及其相互交往；空间框架可以持续利用与主题有关的球体投影图来展示；时间框架由基于9个时代的历史分期连接起来，另附一个时期论述未来前景。
The purpose of this chapter is to render the social background for the germination of nanjing ' s city planning , a production of the modernization in a city , and traces the many changes generated in the most sphere of the city . the third chapter from the angle of the city planning itself , firstly divides the research period into five sub - periods and gives the reasons for this division 第三章从南京近代城市规划本身发展的角度出发，首先划分出其近代城市规划发展的五个历史分期，给出划分的依据；然后着重阐述各个分期段内重要的规划事件、规划文件、建设活动等等，最后本章节还对南京近代城市规划管理机构和管理方式的演变做出分析。
