| 释义 |
1 ?圆心角 ... radius 半径 radius angle 圆心角 radius arm 半径杆 ...
- 1
self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work. 我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。 - 2
R And the track has a radius R, and at this moment in time the angle equals theta, and here is the object. - 3
Let this be the angle d theta so it moves in a short amount of time over an angle d theta dS and the arc here is dS, R and the radius is R. 这是角度dθ,它运动了一会儿,运动过角度dθ,弧度是，半径是。
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