| 单词 | 固定点 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔bite〕The part of a tool or machine that presses against and maintains a firm hold on a working surface.固定点，卡紧：工具或机器上紧压工作面保持固定的部分美国传统〔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〔cone〕The surface generated by a straight line, the generator, passing through a fixed point, the vertex, and moving along a fixed curve, the directrix.锥面：由一条直线，即母线，通过一固定点，即顶点，沿一给定曲线，即准线，连续移动而产生的平面美国传统〔gyrate〕To revolve around a fixed point or axis.旋转：绕一个固定点或轴转动美国传统〔parabola〕A plane curve formed by the locus of points equidistant from a fixed line and a fixed point not on the line.抛物线：到一固定直线和不在直线上某一固定点等距的点的轨迹所形成的平面曲线美国传统〔pole〕A fixed point of reference.集中点：作为参照的固定点美国传统〔radius vector〕A line segment that joins the origin and a variable point in a system of polar or spherical coordinates.矢径：在一个极面或球面坐标系中连接一个固定点与一个动点的线段美国传统 |
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