查询词典 radius angle

By Visual Basic 6.0 program, taken the distance between hole 200mm and buried depth 120～150mm as the optimization goal, the most optimum parameters range of the mechanism was obtained as follows: the initial angle between planet frame and the line formed from spraying-fertilizer needle-tip and planet wheel axle was -45°～-40°, the initial angular displacement of planet frame was 40°～50°, the distance between spraying-fertilizer needle-tip and the planetary gear axle center was 280～300mm, simultaneously, the semi-major axis of elliptic gear was 29.364mm, the teeth quantity was 23, the ratio of semi-minor axes and semi-major axis was 0.958, the radius of circular gear was 25mm.

对该机构进行运动学分析，建立了数学模型，以穴距200mm和入土深度120～150mm为寻优目标，应用Visual Basic 6.0软件编程得出满足机构运动要求的最优参数范围为：喷肥针尖和行星轮轴连线与行星架的初始夹角-45°～-40°、行星架初始角位移40°～50°、喷肥针尖与行星轮轴心距离280～300mm，此时椭圆齿轮长半轴29.364mm、齿数23、短半轴与长半轴比0.958，正圆齿轮半径25mm。

The radius vector error and polar angle error are used to describe the scroll involute error.

并采用极角误差以及向径误差来描述线型误差。

Either of two coordinates , the radius vector or the polar angle , that together specify the position of a point in a plane .

极坐标：两个坐标中的任一个，向量径或极角，共同用以确定平面中一点的位置

Feature points ; geometric gravity center ; polar radius ; argument angle

特征点；重心；极径；幅角

Its 10 grooves are well described by Archimedes'(287 to 212 B.C.) spirals (5, 6) of the form r =*(in polar coordinates, radius r, angle , and constant ).

其10槽有很好的描述了阿基米德( 287至公元前212 ) spirals ( 5 ， 6 )的形式r =*(极坐标，半径r ，角度和常数)。

With a camera (640pixel×480pixel and 0.097 3mm/pixel as resolution of target),50 samples are taken at each distance of 1m,9m and 18m.The standard deviation is 0.009 37mm,0.034 2mm and 0.086 0mm for polar radius,0.843′,1.26′ and 1.57′ for angle,respectively.

采用640pixel×480pixel摄像机(光靶分辨率为0.0973mm/pixel)，在1m、9m和18m处分别摄取50幅图像，测量结果的极径标准偏差分别为0.00937mm、0.0342mm和0.0860mm，极角标准偏差分别为0.843′、1.26′和1.57′。

And the polar angle and the polar radius was represented into AutoCAD polar coordinate, the involute was drawn through the spline linear tool. And then, a section of the involute was intercepted with the diameters of the point circle and the root circle, used it as the tooth face of the spline. The involute tooth thickness was drawn using the diameter of the divided circle and the tooth-form was drawn through rotating, mirroring image and cutting.

根据DIN 3960渐开线花键的坐标值，用EXCEL函数功能计算出不同压力角下渐开线的极角和极半径，表示成AutoCAD极坐标并通过样条线工具绘制出渐开线，再用齿顶圆和齿根圆直径截取一段渐开线作为为花键齿面，并用分度圆直径绘制出渐开线齿剖面，经镜像和裁剪便可绘制出渐开线齿形。

The Docter is able to keep any image blur outside the 75% radius, beyond that, the star image is degrading more rapidly. This is an excellent performance for a wide angle 8x42 binocular, and for sure the investment into sophisticated quadruplet objectives is paying off here.

Docter能将图片模糊控制在半径75%以外，越过后，星像迅速变差，这在8x42的广角望远镜里表现极其优秀，可以确信那复杂的4组结构物镜的投资就在这里体现了。

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

In this paper, the pressure angle and minimal radius of curvature of cam mechanism with swinging roller follower are discussed in details.

本文对摆动从动杆盘状凸轮机构的最大压力角和最小曲率半径问题进行了详细的讨论。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。