This method is different from usual method, we use the concept of electric flux and principle of superposition for the electric field.
与一般方法不同，本文利用电通量概念及电场叠加原理，推导出电场能量密度的普遍表达式。方法简明。
This method is different from usual method, we use the concept of electric flux and principle of superposition for the electric field.
与一般方法不同，本文利用电通量概念及电场叠加原理，推导出电场能量密度的普遍表达式。方法简明。
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