| 单词 | 摆线 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔cycloid〕Mathematics The curve traced by a point on the circumference of a circle that rolls on a straight line.【数学】 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美国传统〔epicycle〕Mathematics A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid.【数学】 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，即外摆线或内摆线美国传统〔epicycloid〕The curve described by a point on the circumference of a circle as the circle rolls on the outside of the circumference of a second, fixed circle.外摆线：一个动圆沿另一个定圆外侧滚动时，动圆圆周上一点的轨迹曲线美国传统〔trochoid〕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美国传统 |
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