【运输】往复运动

利用把手输入一端转速，藉由半径的变化，因输出端滚轮的高度需与输入端接触点相同，而造成输出端的高度有往复式的高低变化。

曲轴，和连杆一起，把活塞的往复运动转化为驾驶车辆需要的旋转运动。

pumping system reciprocating-piston pump

tractor-mounted mower with reciprocating endless belt cutters

reciprocating filing machine

internal-combustion engine, internal-combustion reciprocating-piston engine

cam mechanism for interconverting oscillating motion and reciprocating motion

steering gear for interconverting oscillating motion and reciprocating motion

two-wheeled motor mower with reciprocating endless

reciprocating conveyor【机】