ferromagnetic modulator

例句：

1. 1.This ferromagnetic modulator is used to control the flow of electricity in a circuit.
   这个铁磁调制器用于控制电路中电流的流动。
2. 2. The engineer used a ferromagnetic modulator to tune the frequency of the signal.
   工程师使用了一个铁磁调制器来调谐信号的频率。
3. 3.The ferromagnetic modulator was designed to improve the accuracy of magnetic field measurements.
   铁磁调制器被设计用来提高磁场测量的准确性。