loop difference signal

例句：

1. 1. The loop-differential signal is used to detect changes in the magnetic field.
   环路差分信号用于检测磁场的变化。
2. 2. In this experiment, we used a loop-differential signal to measure the resistance of the circuit.
   在这个实验中，我们使用环路差分信号来测量电路的电阻。
3. 3. The loop-differential signal was used to compensate for the errors in the measurement system.
   环路差分信号被用来补偿测量系统中的错误。