exciter coil

例句：

1. 1.The exciter coil is crucial for the operation of the generator.
   激励线圈对于发电机的运行至关重要。
2. 2. The engineer used the exciter coil to improve the efficiency of the machine.
   工程师使用激励线圈来提高机器的效率。
3. 3.The exciter coil was designed to generate a strong magnetic field that could power the motor.
   激励线圈被设计用来生成一个强大的磁场，以驱动电机。