ro·ta·ry
adjective/ˈrəʊtəri/
/ˈrəʊtəri/
[only before noun]- (of a movement) moving in a circle around a central fixed point
旋转的;绕轴转动的 - rotary motion
旋转运动
- rotary motion
- (of a machine or piece of equipment) having parts that move in this way
转动的 - a rotary engine
旋转式发动机
- a rotary engine
Word Originmid 18th cent.: from medieval Latin rotarius, from rota ‘wheel’.