When a pump is used to provide a vacuum, we consider it even more important to guard against leakage.

当泵被用来抽取真空时，我们认为尤为重要的是防止漏气。

youdao

When a pump is used to provide a vacuum, we consider it even more important to guard against leakage.

当泵被用来抽取真空时，我们认为尤为重要的是防止漏气。

youdao