In design of highway drainage system, the rainfall reappearing period is a very important parameter.

在公路排水系统设计中，降雨重现期是一个非常重要的参数。

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In design of highway drainage system, the rainfall reappearing period is a very important parameter.

在公路排水系统设计中，降雨重现期是一个非常重要的参数。

youdao