rotary

a. 旋转的
n. 运行的机器

The gardener asked me for a rotary lawn mower.

园丁向我要一台旋转式割草机。

A device for transmitting rotary motion, consisting of a handle or arm attached at right angles to a shaft.

曲柄一个传递转动的部件，包括一个手柄或把手与一个轴直角相连