1·The piston is reciprocating inside cylinder.
活塞在汽缸内部往复运动。
2·A type of fluid pump in which reciprocating pistons or plungers displace the fluid.
流体泵的一种类型。它的往复运动的活塞或柱塞驱替流体。
3·Considering the variable inertia of the reciprocating parts, free torsional vibration characteristics of crankshaft are studied.
研究往复运动件变惯量下的曲轴系自由扭振特性。
4·The metering device has a plunger reciprocating within the tube, with the plunger having a handle.
该计量装置具有在所述管道内往复运动的柱塞,所述柱塞具有手柄。