立式三螺杆泵采用机械密封加骨架油封双重密封方式，无泄露。

Vertical three-screw pump adopts double seal mechanical seal and framework oil seal, no leakage.

youdao

立式三螺杆泵采用机械密封加骨架油封双重密封方式，无泄露。

Vertical three-screw pump adopts double seal mechanical seal and framework oil seal, no leakage.

youdao