A device that periodically and automatically opens and closes an electric circuit, producing pulses.
A device that periodically and automatically opens and closes an electric circuit, producing pulses.
断续器一种阶段性的能自动打开及关闭电路并产生脉冲的仪器
A device that periodically and automatically opens and closes an electric circuit, producing pulses.
断续器一种阶段性的能自动打开及关闭电路并产生脉冲的仪器