power mains

基本解釋

A simple electronic circuit is adopted for compensating the power mains fluctuation.
採(cǎi)用了簡(jiǎn)便的電網(wǎng)波動(dòng)補(bǔ)償方案。
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 .
將使用裝置把EUT（電源供應(yīng)器）連接主要電源上，對(duì)交流電的EFT乾擾信號(hào)接在交流電源線上。
www.szdansun.com.cn
Carrier current systems use the power line mains to transfer information between remote locations.
電力線載波通信系統(tǒng)利用電力線來(lái)實(shí)現(xiàn)遠(yuǎn)程數(shù)據(jù)傳送。

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.
ENGADGET: ReNu solar panels announced for iPhone charger, sound dock, LED desk lamp
It would not have been the original detectors that were hard-wired into the system because they run on mains power.
FORBES: A Lesson In Keeping An Elderly Parent Safe In Their Own Home
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.
ENGADGET: Canalys: PC and tablet shipments hit new high in Q2 with Apple in the lead, HP next in line