Transistor: A component made up of layers of semiconducting materials such as silicon and germanium. It is used to amplify a signal or open and close a circuit. In digital computers, it functions as an electronic switch.

• 电晶体:由多层半导体物料如矽和锗组成的配件；用来扩大信号或作电路的开关.；在数字电脑里；它的作用是一个开关。