| 单词 | fixed point |
| 例句 | 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〔circle〕A plane curve everywhere equidistant from a given fixed point, the center.圆，圆形：从定点（圆心）等距离到任一点的平面曲线美国传统〔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〔ellipse〕The locus of points for which the sum of the distances from each point to two fixed points is equal.椭圆：到两定点的距离的和为常数的点的轨道美国传统〔focus〕Mathematics A fixed point whose relationship with a directrix determines a conic section.【数学】 焦点：一个与准线的关系决定圆锥形状的定点美国传统〔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〔line〕A real or imaginary mark positioned in relation to fixed points of reference.线：与固定的点相 关的实线或虚线美国传统〔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〔perfect〕Grammar Of, relating to, or constituting a verb form expressing action completed prior to a fixed point of reference in time.【语法】 完成的：属于、关于或构成表示在某一特定时间点已完成动作的动词时态的美国传统〔pole〕A fixed point of reference.集中点：作为参照的固定点美国传统〔sphere〕Mathematics A three-dimensional surface, all points of which are equidistant from a fixed point.【数学】 球面：一个三维空间表面上所有点都与该空间的中心点距离相等美国传统 |
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