释义 |
alpha angle 英/ ??lf? ???ɡl / 美/ ??lf? ???ɡl / - 1
The angle of alpha will then be tangential to this point. - 2
In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors. 特别地,能得到α角的余弦值,我们知道如何找两向量的夹角。 - 3
I have here that same ladder, and now what I will do is I will set the angle alpha not exactly at the critical point but a little lower, so that when I let it go, we'll all see that it will slide. 这是一个梯子,现在我要,使得角度α,不是恰等于临界点,而是略小一些,所以当我放手,我们会看到它下滑。
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