贮存电荷，起到电池储能的作用。
The storage charge, have the effect of battery energy storage.
磁场对运动电荷的作用洛伦兹力。
利用特殊函数求解电势、电场，计算了点电荷与磁偶极子相互作用的电磁角动量。
The electric potential and the field of point charge are resolved with a special function.
利用特殊函数求解电势、电场，计算了点电荷与磁偶极子相互作用的电磁角动量。
The electric potential and the field of point charge are resolved with a special function.
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