单词：rotary motion
rotary motion的用法和样例：
例句
- This expansion is converted by a movement into the rotary motion of the pointer.这个扩张通过一个机械装置转化为指针的转动。
- The mast assem-bly supports the rotary drill head and its hoisting mechanism.支架组件支持转动钻头及其提升机构。
- This motion can be used to run a lathe or some other machine.这种旋转运动可用来开动车床或其他机器。
- To massage your hand, make small rotary motions with your thumb pad over one spot at a time.按摩手的方法就是让的你拇指指腹一次绕着一个点做旋转运动。
- rotation旋转
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