The vacuum-type pump with a high, simple structure, easy to use, reliable, easy maintenance features.

该型泵具有真空度高、结构简单，使用方便、工作可靠、维护方便的特点。

youdao

The vacuum-type pump with a high, simple structure, easy to use, reliable, easy maintenance features.

该型泵具有真空度高、结构简单，使用方便、工作可靠、维护方便的特点。

youdao