This paper firstly discussed the issue of library core value.
本文首先重点探讨了图书馆核心价值问题。
This paper firstly discussed the concept of bearing capacity. Then, its nature of traffic environmental system was analyzed in detail.
本文从承载力的概念入手，对交通环境承载力的概念、内涵以及本质进行了分析。
This paper firstly discussed data organizing form and data describing process of GIS thematic database and then probed into the process of thematic cartography of GIS.
首先讨论了GIS专题基础数据库的数据组织形式和描述过程，对GIS专题基础数据库的专题地图制图过程进行理论化的探索。
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