Built-in galvanometer

例句：

1. 1.The built-in galvanometer in the instrument is very accurate.
   这个仪器里的内置电流表非常准确。
2. 2. The engineer used the built-in galvanometer to measure the current flowing through the circuit.
   工程师使用内置电流表来测量电路中流过的电流。
3. 3.The built-in galvanometer was used to detect any irregularities in the electrical system.
   内置电流表被用来检测电气系统中的任何异常。