The truth is, the brain is an electrical device.

大脑其实是个电气设备。

Amplifier is electrical device which make sounds louder.

扩音器是一种使声音放大的电气装置。

An electrical device that introduces inductance into a circuit.

把感应系数引入电路的电用装置。

LIKE any other electrical device, a pacemaker needs a power source.

和其他所有的电子设备一样，一个起搏器同样需要能源。

DETECTOR, An electrical device for sensing normal or abnormal conditions.

探测器，用来感应情况之正常与否的电气装置。