sustained oscillator

例句：

1. 1.The sustained oscillator is responsible for maintaining the stability of the system.
   持续振荡器负责维持系统的稳定。
2. 2. The sustained oscillator was used to detect the presence of a fault in the circuit.
   持续振荡器用于检测电路中是否存在故障。
3. 3. The sustained oscillator was used to generate a signal that could be transmitted over long distances.
   持续振荡器用于生成一种信号，可以通过长距离传输。