power mains

基本解释

A simple electronic circuit is adopted for compensating the power mains fluctuation.
采用了简便的电网波动补偿方案。
The EUT(power supply) was connected to the power mains by using device, which couples the EFT interference signal to AC power lines. As setup show .
将使用装置把EUT（电源供应器）连接主要电源上，对交流电的EFT干扰信号接在交流电源线上。
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Carrier current systems use the power line mains to transfer information between remote locations.
电力线载波通信系统利用电力线来实现远程数据传送。

That's why we're pleased to note that a company called ReNu has just announced a solar panel that can be used to charge your iPhone or iPod, power the device's sound dock, or even keep your desk light shining sans mains power.
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It would not have been the original detectors that were hard-wired into the system because they run on mains power.
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When designed to be portable, it must be able to function without mains power and have a built-in display of at least 7 inches in diagonal.
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