... involute of a curve 曲线的渐伸线 involute of evolute 渐伸线 irrational 无 的,无 ...
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involute of evolute
渐开线的渐开线
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When the point moves along the plane curve , the trace curve of the point is called the evolute of the curve , denoted by, and is called the involute of the curve .
当点沿曲线移动时，相应的曲率中心的轨迹曲线称为曲线的渐屈线，而曲线称为曲线的渐伸线。
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