This paper introduces application of no bottom valve pumping system using communicating principle in special situation.

介绍特殊情况下连通器原理在无底阀排水系统中的应用。

youdao

This paper introduces application of no bottom valve pumping system using communicating principle in special situation.

介绍特殊情况下连通器原理在无底阀排水系统中的应用。

youdao