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.
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。
Consisting of a rectifier, charger, battery bank, inverter, monitor and other devices, UPS can offer the energy storage with constant voltage and frequency power source for the electrical load.
UPS是一种以整流器、充电器、电池组、逆变器、监控器等装置组成的、能够为电气负载提供恒压恒频电源的储能设备。
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