电源

Make sure the current is switched off before you leave on holiday.

你出去度假前一定要把电源关上.

Never overload an electrical socket.

千万不要使电源插座过载。

He is using your mains electricity to recharge his car battery.

他在用你家里的电源给他的车载蓄电池充电。

Where can I plug in my hairdrier?

我在哪里能接上吹风机的电源?

They plugged in their tape-recorders.

他们给录音机接上了电源。

The cooker is not yet wired in to the main supply.

炊具尚未接通电源.

These appliances should not be connected to power supplies.

这些家用电器不应该接通电源。

All electric power would be shut off in homes, streets, and factories.

无论是在家里 、 街上, 还是工厂里,所有的电源都要关闭.

Resistance thermometer bridges may be excited from either a-c or d-c sources.

电阻温度计 电桥 的供电可以是交流电源,也可以是直流电源.

Hybrids, unlike pure electric cars, never need to be plugged in.

与纯电动汽车不同，混合动力车永远不需要接电源。

I filled the kettle while she was talking and plugged it in.

她说话间，我把水壶灌满并插上了电源。

The battery charger plugs into any mains socket.

这个电池充电器可以插入任何类型的电源插座.

A single red LED shows that the power is switched on.

单支红色发光二极管表示电源已接通。

Make sure plugs are disconnected from the mains.

确保插头与电源断开。

It is mains or battery powered.

它是由电源或者电池供电的。