Hypozykloide hypocycloid内摆线
hypocycloid gear摆线齿轮
Prolate hypocycloid长幅内摆线
spherical hypocycloid球面内摆线
hypocycloid scan咽下部窥察镜;内摆线扫描
Curtate hypocycloid短幅内摆线;短副内摆线
Durtate hypocycloid短副内摆线
hypocycloid of four cusp四尖圆内旋轮线;四尖内摆线
hypocycloid of three cusps[数] 三尖圆内旋轮线
N（名词） a curve described by a point on the circumference of a circle as the circle rolls around the inside of a fixed coplanar circle 圆内旋轮线 → compare epicycloid, cycloid