river base-flow 河川基流
There are many methods to separate the river base flow in mountainous areas.
山丘区河川基流分割方法很多，采用不同方法的分割成果不尽相同。
This paper introduces how to construct Yangtze River knowledge base based on conception design method, analyze and design conception model, architecture, system flow and system modules.
文章介绍了概念设计方法，分析与设计了长江知识库的概念模型、系统构架、系统流程和系统模块。
The region of upper Lanzhou is main runoff-producing area in Yellow river basin, and the base-flow plays an important role in the runoff.
黄河兰州以上是黄河流域主要来水区，其中基流在来水量中占有相当大的比重。
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