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在电磁学中,常常要用左右手来判断一些物理量间的关系,而同学们往往将左右手用混,使问题得不到解决.下面说一下左右手的运用.
In electromagnetism, it is often necessary to use left and right hands to determine the relationship between some physical quantities, and the students often mix left and right hands to make the problem unsolved. Let us talk about the use of left and right hands.