三种平面曲线的关系

The relationship among three types of plane curves

本文讨论了三种重要的平面曲线———摆线、圆的渐开线与外摆线的关系。在文 [1

This paper first discusses three types of important plane curves, i.e. cycloid, involute of circle and epicycloid, then proceeds to argue that cycloid and involute of circle are both the limiting cases of epicycloid on the basis of article .