plunger

[机] 活塞；潜水者；跳水者；莽撞的人英释中释na part of a machine that moves up and down

1 plunger pump,柱塞泵；活塞泵；滑阀泵

2 plunger valve,柱塞阀；柱塞式阀；活塞式阀

3 pump plunger,泵柱塞；滑阀泵

4 plunger type,柱塞式；活塞式

5 plunger lift,柱塞行程

6 plunger piston,柱塞