英语语法分析

Maybe, but I use cardioid most of the time.

或许可以，但是我大多数情况下会使用心型指向。

Construct an animation displaying a pair of orthogonal tangents of a fixed cardioid.

建构一动态绘图。展示给定的心脏线外一对的正交切线。

The envelope of moving line on the hypocycloid plane may be an epicycloid or cardioid and the…

摆线逆运动中与动切线成定角的直线，其包络也是圆周渐开线。