trochoidal curve

• 摆线,余摆线

trochoidal curve的用法和样例：

例句

1. The curve described by a point on the circumference of a circle as the circle rolls on the outside of the circumference of a second,fixed circle.
   外摆线一个动圆沿另一个定圆外侧滚动时，动圆圆周上一点的轨迹曲线。