Solid-statedevices are always powered by direct currents and voltages .
固体状态设备总是以直流和电压为动力。
2
The multiplexer can be constructed from either mechanical switches or solid-statedevices (such ad CMOS switches).
多路开关可以用机械开关或者固态器件(例如CMOS)开关构成。
3
The recent research achievements in optically controlled microwave solid-statedevices are described. The developing trends of this field are presented.