curve tracing

• 曲线描迹法,曲线作图

curve tracing的用法和样例：

例句

1. The curve traced by a point on the circumference of a circle that rolls on a straight line.
   圆滚线，摆线圆周上任一点在一条直线上滚动时所形成的曲线
2. A curve traced by a point on or connected with a circle as the circle rolls along a fixed straight line.
   旋转线，次摆线圆在固定直线上滚动时，圆上一点或与圆相连的一点的弧形轨迹