auto excitation

例句：

1. 1. The circuit has a self-excitation characteristic.
   这个电路具有自激振荡特性。
2. 2. In the engine, there is an auto-excitation system that helps to maintain the proper balance of theinternal combustion process.
   发动机中有一个自激激励系统，有助于保持内燃过程的适当平衡。
3. 3. The auto-excitation phenomenon can lead to unstable behavior in electrical systems.
   自激激励现象可能导致电气系统中不稳定的行为。