impedance coil

例句：

1. 1.The impedance coil is used to measure the resistance of a circuit.
   阻抗线圈用于测量电路的电阻。
2. 2. The impedance coil was designed to improve the efficiency of the motor.
   阻抗线圈被设计来提高电机的效率。
3. 3. The impedance coil was used to detect the presence of an incoming signal.
   阻抗线圈被用来检测到信号的存在。