a line generated by a point on a circle that rolls around inside another circle
例句
A circle whose circumference rolls along the circumference of a fixed circle,thereby generating an epicycloid or a hypocycloid. 周转圆一个围绕着另一个固定圆周长滚动的圆，从而产生圆外旋轮线或圆内旋轮线，即外摆线或内摆线
The equations of thecurvature,curvature radius on hypocycloid"s tooth profile are deduced. 在此基础上分析推导了各种型式的滚子链谐波传动的传动比计算公式。
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。
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.
A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid. 周转圆一个围绕着另一个固定圆周长滚动的圆，从而产生圆外旋轮线或圆内旋轮线，即外摆线或内摆线
Mathematic model of the working process for new type hypocycloid single-cylinder diesel engine was built base on thermodynamic theory. 运用热力学理论建立了新型内摆线单缸柴油机工作过程的数学模型，采用Matlab编制了计算程序，对缸内压力、温度和平均指示压力等主要性能指标进行了仿真研究。
