Now that  we have that figured out, Bobby, what shape shall we choose for our imaginary Gaussian surface?

现在我们已经明白了， Bobby，我们应该为我们的假想高斯曲面选择什么形状呢？

If we had chosen a cube as our imaginary Gaussian surface, the angle between  the electric field and the area vector would have had all sorts of different values.

如果我们选择一个立方体作为我们的假想高斯表面，电场和面积矢量之间的角度将会有各种不同的值。

Typically, we choose the shapes of our imaginary  Gaussian surfaces such that the electric field generated by the enclosed charge is either  perpendicular to or parallel to the sides of the Gaussian surface.

通常，我们选择假想高斯表面的形状，使得封闭电荷产生的电场垂直或平行于高斯表面的边。

In the example we just did, capital  Q is the charge of the point charge, and it is the charge enclosed inside an  imaginary spherical surface and the imaginary spherical surface is called a Gaussian surface.

在我们刚才做的例子中， 大写 Q 是点电荷的电荷，它是被包裹在一个假想球面内的电荷， 这个假想球面称为高斯曲面。