At that part is actually math, namely, the divergence theorem.

那部分是数学的东西，即散度定理。

youdao

OK, so we have somehow a connection between these which is the divergence theorem.

在某种方式下它们是有联系的,这就是散度定理。

youdao

OK, so we have somehow a connection between these which is the divergence theorem.

在某种方式下它们是有联系的,这就是散度定理。

youdao