rotary基本解释
adj,[机]旋转的，转动的；轮流的,同近
the rotary movement of the helicopter blades.直升机螺旋桨叶的转动
旋转的，转动的；轮流的英释adjadjturning in a circle around a fixed point, like a wheel
rotary kiln,回转窑；回转炉.短语
