二级支流
二级支流-
东庄水利枢纽工程位于陕西省关中地区的泾河下游，泾河是黄河的二级支流，其下游汇入三门峡库区的渭河下游。
The Dongzhuang Water Conservancy Complex Project is located on the downstream of the Jinghe River in Guanzhong Area of Shanxi Province .
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凝灰岩的遇水分解是导致淮河二级支流北汝河上游产生石漠化的主要原因。
The main reason of stone desert formation in the upper reaches of Beiru River-a tributary of the Huai River , is that tuff break up when watering .