英语语法分析

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。

Based on the principle of the formation of hypocycloid, a kind of stepless gear speeder has been designed.

根据内摆线的形成原理，设计出一种齿轮无级变速器。

The method is very simple and the result is accurate enough. It suits different batch production of hypocycloid gears.

该方法计算简单，结果精确，适用于摆线轮各种批量的生产。