differential milliammeter

例句：

1. 1. This differential milliammeter is used to measure the current in different circuits.
   这个差动电流表用来测量不同电路中的电流。
2. 2. The engineer used a differential milliammeter to detect the faulty component.
   工程师使用差动电流表来检测故障元件。
3. 3. During testing, the technician carefully monitored the differential milliammeter readings.
   在测试过程中，技术员仔细监控差动电流表的读数。