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。

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

youdao

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。

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

youdao