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单词 圆周上
释义 DEFINITIVE EXAMPLES 权威例句〔cardioid〕A heart-shaped plane curve, the locus of a fixed point on a circle that rolls on the circumference of another circle with the same radius.心脏线:一种心形的平滑曲线,圆周上一固定点绕另一具有相同半径的圆的圆周转动的轨迹美国传统〔center〕A point equidistant from all points on the circumference of a circle or on the surface of a sphere.圆心,球心:与一圆周上或一球面上所有点等距的一点美国传统〔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〔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〔equidistant〕All points on a circle are equidistant from the centre.圆周上各点离圆心的距离相等。牛津高阶〔equidistant〕Points on a circle are equidistant from its center.圆周上的各点到圆心的距离相等。韦氏高阶〔equidistant〕Points on a circle are equidistant from its centre.圆周上各点与圆心等距。英汉大词典〔radius〕A line segment that joins the center of a circle with any point on its circumference.圆半径:将圆心与圆周上任一连接起来的线段美国传统
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