风往南刮，又向北转，不住地旋转，而且返回转行原道。
The wind blows to the south and turns to the north; round and round it goes, ever returning on its course.
对组成回转三割炬炬的基本器件——旋转变压器进行了较详细的分析。
The basic elements of forming infinite rotating three cutting torches-rotating transformer is analysed in detail.
在对齿轮参数进行数学分析的基础上，通过改变数控回转台的旋转角度，实现了用砂轮的一个端面去磨削齿轮的齿面。
Based on analyzing the gear parameters, the grinding of the gear face with an end face of the grinding wheel was realized by changing the rotating Angle of rotating table.
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