| 释义 |
活塞huósāi汽缸或唧筒里往复运动的机件,通常圆饼形或圆柱形。在发动机汽缸里,活塞的作用是把蒸汽或燃料爆发的压力变为机械能。{piston; disc-like or cylindrical part moving back and forth within a tube or a pump. In the air cylinder of an engine, a piston functions to change the pressure produced by steam or fuel combustion into mechanical power.}也叫also鞲鞴(gōubèi)。 |