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- A diameter passes through the center of a circle. 直径从圆心穿过。
- Every man is the center of a circle whose circumference he cannot pass. 每个人都是生活在他自己的不能越过的圈子的中心。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- The distance from the center of a circle to the edge is the same at any given point. 从圆心到圆周任何一点的距离都是一样的。
- 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
- The point in the middle of a circle is called the center of a circle. It's represented by the letter O. 把圆中心的一点叫做圆心,圆心一般用字母表示。
- A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery. 直径穿过一图形,特别是圆形或球形的中心到圆周结束的直线段
- A game originating in Scotland in which two four-person teams slide heavy,oblate stones toward the center of a circle at either end of a length of ice. 冰上溜石游戏一种源于苏格兰的游戏,两队比赛,每队四人,将沉重的椭圆形石头滑向位于冰道两端的圆圈的中心。
- A straight line segment passing through the center of a figure,especially of a circle or sphere,and terminating at the periphery. 直径穿过一图形,特别是圆形或球形的中心到圆周结束的直线段
- The reciprocal of the radius of a circle. 曲率一个圆半径的倒数
- This paper studied the case that there is a known point of tangency of a circle and a parabola while the center of the circle is on the recession of the parabola. 应用数形结合的方法,研究了已知圆与抛物线有一个切点,而圆心在切点处抛物线的凹向的情形。
- A game originating in Scotland in which two four-person teams slide heavy, oblate stones toward the center of a circle at either end of a length of ice. 冰上溜石游戏一种源于苏格兰的游戏,两队比赛,每队四人,将沉重的椭圆形石头滑向位于冰道两端的圆圈的中心
- The diameter and the circumference of a circle. 圆的直径和圆周相关联。
- A unit of angular measure equal to the angle subtended at the center of a circle by an arc equal in length to the radius of the circle, approximately57=17?4.6". 弧度平面角的一种衡量单位,其大小为长度等于半径的弧对的圆心角,1弧度角约等于57=17?44。6
- Tell the names of each part of a circle. 说出圆各部分的名称。
- With the Lagrange multiplier method, the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given. 利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离,给出了曲线与曲面相切的条件。
- He should have been the sun of a circle. 他本应该做一个周而复始的太阳。
- The center of town; the center of a stage. 市中心;舞台中心
- Almost all the balls follow the shape of a circle. 几乎所有球类都呈圆形。
- By definition the capital is the political and cultural center of a country. 根据定义,首都是一个国家的政治文化中心。