In this pump and export pipeline maintenance, the system will not happen in the liquid back.

这样在检修泵及输出管道时，系统中的液体不会发生倒流。

youdao

In this pump and export pipeline maintenance, the system will not happen in the liquid back.

这样在检修泵及输出管道时，系统中的液体不会发生倒流。

youdao