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齿轮/传动装置/引言与术语
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来自维基百科，开放世界中的开放书籍
<
齿轮
|
传动装置
齿轮用于改变旋转运动中的轴速度。这是通过连续啮合齿来实现的。它们依靠直接接触，不使用任何中间连接或连接器。
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书：机械论
华夏公益教科书
