piston
US
UK piston n: (moving part of a pump)
SC 活塞 huó sāi
TC 活塞
TC 活塞
When the gas mixture explodes, it forces the piston down, and this motion is transferred to the car's wheels.
piston pin: (machinery)
SC 活塞销
SC 活塞环
TC 活塞環
TC 活塞環
piston rod n: (part of a piston engine)
SC 连杆
TC 連桿
TC 連桿
SC 活塞连杆