live voltage detector

例句：

1. 1. The live voltage detector was used tomonitor the electrical current in the circuit.
   现场电压检测器被用来监测电路中的电流。
2. 2. The engineer used a live voltage detectorto detect any potential hazards in thearea.
   工程师使用现场电压检测器来检测该地区的潜在危险。
3. 3. During the testing,the live voltage detector detected a sudden increasein voltage.
   在测试过程中，现场电压检测器检测到电压突然增加。