electric curl field 电流涡旋场
curl electric field [电磁] 有旋电场
curl of a vector field 矢量场的旋度
curl of magnetic field 磁场的旋度
Curl-free vector field 保守向量场
The curl of a vector field in space is actually a vector field, not a scalar function. I have delayed the inevitable.
空间中的向量场的旋度，是一个向量场，而不是一个标量函数，我必须告诉你们。
That is called the curl of a vector field.
这个量叫向量场的旋度。
OK, so let's assume that we have a vector field whose curl is zero.
假设有一个旋度为零的向量场。
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