活塞筒 meaning in Chinese
piston barrel
piston cylinder
pump box
Examples
- Comprising a hollow metal - ball with orifices . the ball is joined to piston and cylinder . press the piston , water jets out of the orifices in all directions
由一个空心有孔金属球和活塞筒组成。压下活塞可以看到水嘴的水向四面八方喷射。