So, the divergence theorem gives us a way to compute the flux of a vector field for a closed surface.
散度定理为我们提供了一种，计算向量场通过闭曲面的通量的方法。
So, if the gradient of a function is a vector, the divergence of a vector field is a function.
如果说函数的梯度是向量，那么向量场的散度就是函数。
OK, so you take the divergence of a vector field.
取一个向量场的散度。
The variation and transmit of the radial and tangential energy flow in the air gap of electrical machines are illustrated by analyzing the divergence of Poynting vector.
通过对坡印亭矢量的散度的分析，阐明了电机气隙中径向能流和切向能流的变化和传递。
The results are as follows:the convergence field of wet Q-vector divergence tilts northwards with height;
结果表明：湿Q矢量散度辐合场随高度向北倾斜；
The results are as follows:the convergence field of wet Q-vector divergence tilts northwards with height;
结果表明：湿Q矢量散度辐合场随高度向北倾斜；
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