OK, so that's the general method of calculation, but we've seen a shortcut for work when we can show that the field is the gradient of potential.
这就是计算的一般方法,但求功的时候,如果向量场是某个势的梯度,是有捷径可走的。
OK, so that's the general method of calculation, but we've seen a shortcut for work when we can show that the field is the gradient of potential.
这就是计算的一般方法,但求功的时候,如果向量场是某个势的梯度,是有捷径可走的。
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