y=b\ sin t is : ( ) A. ( (a^2cos ^2t+b^2sin ^2t)(ab))^3/2 B. ( (a^2sin ^2t+b^2cos ^2t)(ab))^3/2 C. ( (a^2cos ^2t+b^2sin ^2t)(ab))^1/2 D. ( (a^2sin ^2t+b^2cos ^2t)(ab))^( 1/2) 相关知识点: 试题来源: 解析 C ...
网络释义 1. 地球曲率半径 地理专业词... ... radius of curvature 曲率半径radius of curvature of the earth地球曲率半径radius of gyration 旋转半径 ... special.wbw.com.cn|基于12个网页 释义: 全部,地球曲率半径 更多例句筛选 1. radiusofcurvatureoftheearth ...
What is the radius of curvature of the parameterized ellipse {eq}\vec r(t) = \langle 7 \cos (t), 1, 2 \sin(t) \rangle {/eq} at {eq}t = \frac {\pi}{3} {/eq}? Radius of Curvature: The radius of curvature is the reciprocal of the curvature....
Method for precise determination of the radius (R) of a curved surface (1) using an optical curvature sensor (2) with which a curvature value is generated dependent on the distance of the sensor from the surface. According to the method two measurements are made at the same position, but ...
Noun1.radius of curvature- the radius of the circle of curvature; the absolute value of the reciprocal of the curvature of a curve at a given point radius,r- the length of a line segment between the center and circumference of a circle or sphere ...
the radius of curvature is ___a. inside the lensb. the focal lengthc. twice the focal lengthd. half the focal length 相关知识点: 试题来源: 解析 答案C设抛物线方程为x^2=2py 符合该方程的平抛运动的参数方程为:y=1/2gt^2,x=vt 改写参数方程得:y=2gx^2/v^2 于是2p=v^2/2g 在最高点...
If a plane curve of the equation y=f(x), then its curvature at a point P(x,y) is calculated as, K=d2ydx2[1+(dydx)2]32. The radius of curvature of a plane curve of the equation y=f(x) is the reciprocal of its curvature. The radiu...
2.(Mathematics) the length of this line, usually denoted by the symbolr 3.(Mathematics) the distance from the centre of a regular polygon to a vertex (long radius) or the perpendicular distance to a side (short radius) 4.(Anatomy)anatomythe outer and slightly shorter of the two bones of...
aThe curvature radius of R1 and R2 change from radius of 111.25mm of generating circle ∮222.5mm to radius of 18mm, of which the deformation extent is 83% while that under the new technology is only 4.8%. 曲度半径R1和R2从半径的变动111.25mm引起圈子∮222.5mm对半径18mm,其中变形程度是83%,当...
ahandjob handjob [translate] aon top of him 正在翻译,请等待... [translate] aThe curvature and radius of the circumscribed circle based representations [28,29] for adjacency have their limitations. 被包围的圈子基于表示法[28,29的)曲度和半径为毗邻物有他们的限制。 [translate] ...