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圆心

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The abscissa at the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point(1,0) if x is positive or clockwise if x is negative.

余弦以笛卡儿坐标系原点为圆心的单位圆的圆弦端点的横坐标,弧的长度为x,如果x为正,弧的长度则从(1,0)点按逆时针方向算起,若x为负,则按顺时针方向从(1,0)点算起

The abscissa at the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system,the arc being of length x and measured counter clockwise from the point(1,0)if x is positive or clockwise if x is negative.

余弦以笛卡儿坐标系原点为圆心的单位圆的圆弦端点的横坐标,弧的长度为x,如果x为正,弧的长度则从(1,0)点按逆时针方向算起,若x为负,则按顺时针方向从(1,0)点算起

R1 o R1 Construct principle: The key in tangency principle is to find the center of the arc and the tangent position of the corresponding lines, line and arc, and arcs respectively.

作图原理圆弧连接作图的关键在于,找出连接弧的圆心位置及与两被连接线段连接处的切点位置。

Applying theories of numerical analysis and higher geometry, the corresponding mathematical model of stem line is established according to different stems. Whereby, the centers, radii of the arc and its tangent points with the water-line can be found and the curve of arc radius is thus determined. A general formula for expressing stem curved surface is introduced.

应用数值分析和计算几何理论,根据船体首部线型特点,建立首柱轮廓线数学模型;计算水线首圆弧圆心、半径和切点,确定首圆弧半径线;给出首部曲面的通用方程式。

Air China has developed on its own the operation management system, integrated satellite telephone system, space data communication system and shortwave wireless system, which made it the first airline company with the super long-distance supervision capacity in the country. In 2004, after the use of shortwave communication systems, the supervision network which has Beijing and Lhasa as the core, covers the Asian continent, the Indian Ocean and Pacific Ocean stretching to the arctic pole area.

国航自行研制开发了运行管理系统,集成了卫星电话系统、空地数据通讯系统和短波无线电系统,使国航成为国内第一家具有超远程监控能力的航空公司,尤其是2004年短波通信系统的投入使用,形成了以北京、拉萨两点为圆心,全方位、全时空、全天候覆盖亚洲大陆、印度洋和太平洋,并延伸到北极区域的监控网络。

The method of area ratio,the area of a circle in sample plot to the whole area of the circle, in which the distributing point is the center and the scale distance is the radius,is defined as the weighted coefficient of edge correction in this paper.

将边缘效应的权重值定义为以分布点为圆心,尺度距离为半径作圆,圆在样地内的面积部分与整个圆面积之比。

The "no-charge area," formerly a two-by-six foot box where an offensive foul is not called if contact is made with a secondary defensive player who has established a defensive position, will be expanded to the area consisting of a half circle with a four-foot radius measured from the middle of the goal.

翻译成中文就是这段:以篮筐为圆心,4英尺为半径的半圆区域之内,进攻球员撞击已确定防守位置的辅助防守球员将不被判进攻撞人犯规。这一区域过去是一个2x6英尺的矩形。所以我也一直有疑问到底no-charge area是上面时候出现的。还是上面这段文字的翻译我翻译错误了?

In the CVB-PIV system,the image of astatic particle reflection is a circle,whose center represents the in-plane position of the particle andradius is equal to the displacement of bias related to the out-plane position of the particle.

同时,通过CVB-PIV对单个或多个粒子的静止、直线运动、摆动和圆周运动的研究,以及对平面镜角速度等参数对于粒子影像的影响和粒子面外位置与粒子影像偏移量对应关系的探讨表明,静止粒子的影像是一个圆,圆心坐标与粒子的面内位置相对应,圆的半径就是粒子影像的偏移量,与粒子的面外位置一一对应。

Make an cabinet axonometry projection of the cube with a hole.

先画出轴测轴和前后表面圆心

Documents given Matlab language, the binary image segmentation using the operator to identify the ed...

文件给出了matlab语言进行,对二值图像先用sobel 算子找出边缘,再用hough变换找出圆的圆心和半径的程序,并附图像和解释!

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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