电荷存储元件——电容器，可以快速地充放电，但是因为电荷被存储在电容器金属片的表面，所以电荷容量有限。
Electrical storage devices known as capacitors charge and discharge very quickly, but because they hold their charge on the surface of metal plates, their storage capacity is limited.
简单地说，一个电绝缘体隔开两片导电板，而电容器在导电板间储存电量。
Simply put, a capacitor stores an electrical charge between two conductive plates separated by an electrical insulator.
电容器，两片金属中间用绝缘材料隔开的电器。用以储存电能。
CAPACITOR, An electrical component of two metal plates separated by a dielectric material, for storing electrical energy.
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