electric level meter

例句：

1. 1. The electric level meter is used to measure the voltage of the circuit.
   电平表用于测量电路的电压。
2. 2. The engineer used the electric level meter to check the accuracy of the circuit.
   工程师使用电平表来检查电路的准确性。
3. 3. The electric level meter showed that the voltage was within the safe range.
   电平表显示电压在安全范围内。