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In the variational equation, there is only line integral.
在变分方程中,只存在线积分,没有面积分。
youdao
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The force line and potential gradient equation are deduced.
同时推导出其电力线方程和电位线方程。
youdao
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I use count not line, with equation bn. shenzhen!
我用算数不行,用方程总行了吧!
youdao
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I use count not line, with equation bn. shenzhen!
我用算数不行,用方程总行了吧!
youdao