mains supply

This produces a waveform of one polarity operating at a frequency twice that of the mains supply.

经过整流后得到的是一个频率为交流电源两倍的单极波形。

Improvement of the Minitype Impulse Magnetic Field Magnetizing Apparatus Powered by Mains Supply Directly

直接利用电网能量式小型脉冲磁场充磁机的改进

Connect piping system to water mains, supply tanks, pumps, compressors and control equipment.

为水库, 泵, 压缩机和控制设备连接管道系统和给水总管.

Numerous types of inverter are available, but not all are suitable for use when feeding power back into the UK mains supply.

许多类型的变换器是通用的，但不是所有的适合使用，当能连回到英国的供应。

Make sure you disconnect, the television from the mains supply before you open up the back.

打开后盖之前，一定要把总电源切断。

They bought a house with no mains supply.

他们买了一套不接管道设施的房子。

Flexibility and reduced stock holdings cause problems when different mains supply plugs are required for different markets.

当不同的市场需要不同的主控电源插座的时候，灵活性和减少存货两者之间可能会出现矛盾。

Always make sure that the shredder has been disconnected from the mains supply before you disassemble it.

务必让该碎纸机已被断开的电源，然后再拆卸它。