从等强度概念出发，推出一个据以选取渐开线齿轮齿数的简单、实用公式。
This paper advanced a practical and succinct formula for tooth number choice of involute gear.
对渐开线齿形链轮的根切状态进行了研究，求解了不发生根切的最小齿数。
The undercut of the involute sprocket is investigated to derive the minimum tooth.
分析了正多角形渐开线的几何特性，指出角数为偶数的正多角形渐开线可以用作涡旋型线；
The geometry features of involute of regular polygon are analyzed. It is indicated that the involute of even regular polygon can be used as the scroll wrap.
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