Y device that stores up electric charge is called an electric capacitor.
任何储存电荷的装置都叫电容器。
The energy within this circuit oscillates rapidly between an electric field in the capacitor and a magnetic field in the coil.
电容产生电场，线圈生成磁场，电路中的能量就在电场和磁场之间高速振荡。
Capacitance of conductor capacitor electric field energy and energy density.
导体的电容；电容器。电场的能量和能量密度。
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