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φ

φ

φ

1

And then , you would be looking at a piece of that spherical shell corresponding to small values of phi and theta.

然后在这个夹壳中找出一小块，它跟 φ 和 θ 有关。

2

And of course, if you remember what x and y were in terms of r and theta, you can also keep doing this to figure out , oops.

如果你记得 x 、y 对 r 、φ 的转化方式，就可以继续往下了。

3

This vector is uniquely determined in three-dimensional space so you should be able to find phi and theta.

这个矢量是在三维空间中，确定的，唯一的，因此你们可以求出 φ 和 θ

4

OK, so -- Phi is always between zero and pi .

所以 φ 是在 0 和 π 之间的。

5

And, in general , if phi is less than pi over two, then you are in the upper half space .

通常如果 φ 小于 π ，你得到的东西会在上半空间。

6

And phi will be the angle , except it 's measured from the positive z axis , not from the horizontal axis .

φ 表示这个角，不同的是，它是正 z 轴的偏转，而不是水平轴的偏转。

7

Her Harpo Production spawned the careers of Dr. Phi, Ray Rachael and Dr. Oz.

她的哈珀制作公司制作了 φ 博士、雷瑞切尔、博士 OZ 。

8

v0 And there is an angle between ; the position vector and v zero; 0 I call that phi zero.

在方位向量和，之间，有一个夹角；，我们叫它 φ

9

There will be no amplificATion of radiATion AT the frequency ?

在频率？舜 Φ 姆？射将不会有任何增强。

10

And I want to do an example whereby you see how A and phi immediately follow from the initial conditions .

我想举个例子，你会看到 A 和 φ ，是怎么根据，初始参数变化的。

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