有效缩小过滤空间，增大过滤面积，延长使用寿命。

Faulting cylinder effectively narrows the filter space, increases the filtering area and extends the service life.

youdao

有效缩小过滤空间，增大过滤面积，延长使用寿命。

Faulting cylinder effectively narrows the filter space, increases the filtering area and extends the service life.

youdao