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。
The operating principle and design method of a new manual tool are introduced. An intermittent revolution mechanism is applied to the tool to improve screwing efficiency.
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。
The operating principle and design method of a new manual tool are introduced. An intermittent revolution mechanism is applied to the tool to improve screwing efficiency.
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