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介绍一种新型手用工具的工作原理及设计方法。该工具运用了一种新型棘轮换向机构 ,可提高手工攻丝或拆装螺纹工件的工作效率
Introduce a new type of hand tools working principle and design method. The tool utilizes a new ratchet reversing mechanism that increases the efficiency of manual tapping or removal of threaded workpieces