Piston

piston rod [化] 活塞杆 piston ring [化] 活塞环; 涨圈 piston engine [机] 活塞发动机 piston engines (piston-engine 的复数) [机] 活塞发动机 piston rods piston rings piston valve [机] 活塞阀 piston valves opposed piston opposed cylinder trunk piston [化] 筒式活塞; 裙式活塞