毫安表

例句：

1. 1. This device is used to measure the current in a circuit.
   这个装置用于测量电路中的电流。
2. 2. The doctor measured her blood pressure with a mercury sphygmomanometer.
   医生用汞血压计测量了她的血压。
3. 3. The scientist used an ammeter to check the electrical current flowing through the wire.
   科学家使用电流表来检查通过电线的电流。