查询词典 radius of a circle

The unit of plane angle adopted under the System International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees).

国际单位制采用的平面角单位；长度等于半径的弧所对的圆心角。

A radian is the angle subtended by an arc of a circle whose length is just equal to the radius.

一弧度就是长度刚好等于半径的一段圆弧所对的圆心角。

"Because a straight line can be thought of as an arc of a circle of infinite radius, its curvature is zero."

直线可视为半径无穷大的圆，曲率为0

He remembers from his school days that the area of a circle is proportional to the square of its radius, and expects that in the case of a uniform distribution, the number of stations counted should increase like the sequence of number 1, 4, 9, 16, and so on.

他记得他学生年代的时候，一个圆形区域的面积和它的半径的平方是成比例的，所以他认为在均匀分布的情况下，汽油站的数目应该以1，4，9，16等等这种数列增加。

Our next goal is Shanghai two hours -- with Shanghai as the economic circle center of a circle, the radius of the region for two hours.

我们下一步的目标就是上海2小时经济圈――以上海为圆心，2小时车程为半径的区域。

Continue to use the above command to make a round, enter the center of a circle points (-40,-30), respectively, enter the radius value of 8 and 16, draw another set of concentric circles.

4继续用如上的命令作圆，输入圆心点（－40，－30），分别输入半径值8和16，画出另一组同心圆。

In a preferred embodiment of the invention, the inner surface of the arcuate portion of the nose (16) is formed by a sector of a circle and has a radius of curvature which is no greater than about 0.070 inch (1.8 mm).

在一个本发明最佳实施例中，凸起(16)的弧形部分内表面由一个圆的一部分形成并具有一个不大于约0.070英寸(1.8mm)的曲率半径。

Mathematics: Understands and applies basic and advanced properties of the concepts of geometry; Use the Pythagorean theorem and its converse and properties of special right triangles to solve mathematical and real-world problems; Understands the basic concepts of right triangle trigonometry (e.g., basic trigonometric ratios such as sine, cosine, and tangent); Uses trigonometric ratio methods to solve mathematical and real-world problems (e.g., determination of the angle of depression between two markers on a contour map with different elevations); Uses properties of and relationships among figures to solve mathematical and real-world problems e.g., uses the property that the sum of the angles in a quadrilateral is equal to 360 degrees to square up the frame for a building; uses understanding of arc, chord, tangents, and properties of circles to determine the radius given a circular edge of a circle without the center

数学：理解和应用几何概念的初级和高级特性；用毕德哥拉斯定理、逆定理以及特殊直角三角形性质解决数学的和现实世界的问题；理解基本的直角三角形三角比；运用三角比方法解决数学的或现实的问题。（等高线图上的两个标记之间的俯角确定）运用形体之间的关系及其属性解决数学的或现实的问题（利用四边形内角和等于360度来为建筑物框架取正，运用弧，弦，切线和圆的性质确定缺少中心的一段圆弧的圆心

Payment to the Group General Manager of Shanghai Zhaohanzhong revealed in an interview with a group of East China more development strategy : the first step in Shanghai to buy a brand that 140 hectares; The second step, with Shanghai as center of a circle, 2 hour radius of the medium and small cities as economic circles expansion, 2005, the Shanghai company's performance will be the biggest profit growth as a whole group.

金地集团上海公司总经理赵汉忠在接受记者采访时更透露了集团的华东发展策略：第一步，在上海做好这140公顷的大盘打品牌；第二步，在以上海为圆心、2小时车程为半径的中小城市经济圈内扩张，2005年以后，上海公司的业绩将成为整个集团最大的利润增长点。

This paper presents a new method to determine the minimum basic circle radius of a plate cam with a roller follower by the allowable pressure angle, and gives the feasible region of geometrical parameters of the cam mechanism.

介绍按许用压力角确定滚子从动件盘形凸轮最小基圆半径的一种新的解析方法。同时给出凸轮机构几何参数的可行域

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了