AC low voltage switch board 交流低压配电屏
AC input low voltage protection 低压保护
Low Voltage AC Power 低压交流电源
LLAC Low Level AC Voltage 低值交流电压
ac low voltage supply 交流低压电源
AC low voltage 低压交流电压
ac low-voltage 交流低压
low voltage AC cable 低压交流电缆
Step down transformers provide low voltage AC power for lighting, instruments and other circuits that use alternating current at a lower voltage.
降压变压器低压AC电源提供照明，仪器仪表和其他使用交流电在一个较低的电压的电路。
In electronics, a circuit for converting AC voltage to low voltage DC in such a way that the output is regulated to minimize noise and voltage fluctuation.
在电子技术中，把交流电转换成低电压直流电的一种电路。这种电路的输出是经过调整的，使它的噪声及电压波动都很。
The ac adapter (as it's more accurately known) simply converts the ac current from a wall outlet into low-voltage, low-amperage DC current that it provides via a USB port.
AC适配器(这是交流电源更准确的说法)只是把来自墙上插口的交流电转化为低伏特、低安培的直流电源，并通过USB接口充入手机。
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