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 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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