residual current state

例句：

1. 1. The device isdesigned to detect the residual current state of the circuit.
   该设备旨在检测电路的剩余电流状态。
2. 2. In this study, we investigated the residual current state in the soil.
   在这项研究中，我们调查了土壤中的剩余电流状态。
3. 3. The residual current state can be used to determine the health of the electrical system.
   剩余电流状态可以用来确定电气系统的健康状况。