long lead screw
... long johns 长亵服裤 long lead screw 长丝杠 long leaf tobacco 长叶烟草 ...
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细长丝杠属于难加工类产品，根据实际加工经验浅谈此类活件的加工方法。
The slim lead screw is difficult to process, combining with experience physically according of our factory, a processing method was introduced.
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