emitter coil

例句：

1. 1. The device uses an emitter coil to amplify the signal.
   这个设备使用一个发射线圈来放大信号。
2. 2.The emitter coil is responsible for transmitting the radio wave.
   发射线圈负责传输无线电波。
3. 3.The engineer replaced the faulty emitter coil with a new one.
   工程师用一个新的发射线圈替换了故障的线圈。