查询词典 circle method

Curve C at the spot P(x0, y0) curvature is the maximal circle of the curve C tangency at the spot P(x0, y0). Contrail curve G of the center D of curvature circle entitles evolute of curve C.

曲线C在点Px0，y0）曲率圆是与该曲线C相切于点P(x0，y0的最大圆，曲率圆的圆心D的轨迹曲线G称为曲线C的渐屈线。

So, the changing rule of the centre of a circle in benchmark section is where R2 is uniform transform matrix of the centre of a circle in middle part of robot's benchmark section; dp is unit journey.

So，一个圈子的中心的改变的规则在基准的section是 where R2是一致的变换a的中心的矩阵在robot's基准部分的中间部分的circle； dp是单位 journey。

Firstly , the following proofs are made by means of homothet-ic transformation : 1 the centre of a nine-point circle is at the midpoint of ligature of its curcumcentre andorthocentre; 2 the radius of nine-point circle is equal to half of the radius of its curcumcircle.

本文给出一个简单的证法，先用位似变换的方法证明九点圆的圆心在外心和垂心连线段的中点，九点圆的半径等于外接圆半径的一半。

Shanghai Xingbake adopted a circle with white characters on a green background as its logo, but replaced the Starbuck's mermaid in the centre of the circle with a picture of a coffee cup.

上海星巴克用绿色背景和白色带汉字圆圈作为其标志，但是用一个咖啡杯替代了圆圈中部的星巴克美人鱼图像。

He is in royal 4 years, never had taken the office of subordinate almost, never date under the counter with Chen Tianqiao almost get along, the centre of a circle is his circle theory, academic all the time confirm is worn feeling of this kind of distance.

他在盛大4年，几乎从未进过下属的办公室，几乎从未和陈天桥私下约会相处，他的圈子理论、圆心理论一直印证着这种距离感。

Concise main shaft : Regarded sports meeting as the centre of a circle, next term as the centre of a circle with the graduation achievement last term, and then design second-class theme , weekly points of themes divided per month , let all classes carry on every activity and teaching under the simple main shaft , clear direction.

简明主轴：上学期以运动会为圆心、下学期以毕业成果为圆心，进而设计每月分的次主题、每周的分主题，让所有的班级在简单的主轴、清楚的方向下进行各项活动及教学。

The direction vector of benchmark in middle gasbag is ngz1 ＝nt1,when the middle gasbag shrinks, the coordinate of the centre of a circle is where r is suffix, the middle of robot; d02 is distance of the centre of a circle between the middle gasbag benchmark section and drill mud head benchmark section.

The基准方向向量在中间气囊的是ngz1 ＝nt1，当中间气囊收缩，的座标圈子的centre是 where r是词尾，机器人中部； d02是距离一个圈子的the中心在中间气囊基准之间的 section和钻子泥头基准部分。

The direction vector of benchmark in behind gasbag at the beginning position is ngr1＝nt1,the coordinate of the centre of a circle is where g is suffix, gasbag; r is suffix, the end of robot; d01 is distance of the centre of a circle between the behind gasbag benchmark section and drill mud head benchmark section.

The基准方向向量在的气囊之后 beginning位置是ngr1＝nt1，中心的座标of圈子是 where g是词尾，气囊； r是词尾，机器人的末端； d01 一个圈子的中心的is距离在后面之间的 gasbag基准部分和钻子泥朝向基准 section。

The direction vector of benchmark at the beginning position is nz1＝nt1,when the middle gasbag follows along straight line, the coordinate of the centre of a circle is where d03 is distance of the centre of a circle between the middle gasbag benchmark section and drill mud head benchmark section.

The基准方向向量首先安置 is nz1＝nt1，当中间气囊沿平直的跟随line，圈子的中心的座标是 where d03是一个圈子的中心的距离在之间的 middle气囊基准部分和钻子泥朝向 benchmark部分。

As long as the root of the characteristic equation is within the unit circle of z-plane and the corresponding PID parameter is got, the closed loop control system is sure to be stable. Although the root of the characteristic equation can vary within the unit circle of z-plane,different value may affect the control property differently.

本文所采用的这种确定PID参数的方法，虽然可以使特征方程的根在z平面的单位圆内任意取值，但各种取值情况对变风量空调系统的控制品质的影响却不同，因此，要对各种特征方程的根的取值情况进行寻优，本文采用遗传算法对特征方程的根进行寻优，从而使控制器的参数得以优化。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。