Small catchment are basic management units in the flash flood disaster control planning (FFDCP) in China.

在进行全国山洪灾害防治规划中，小流域是基本工作单元。

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Small catchment are basic management units in the flash flood disaster control planning (FFDCP) in China.

在进行全国山洪灾害防治规划中，小流域是基本工作单元。

youdao