voltage-regulating transformer

例句：

1. 1. The voltage-regulating transformer is used to regulate the voltage of power lines.
   电压调节变压器用于调节电力线路的电压。
2. 2. The voltage-regulating transformer helps to protect sensitive electronic devices from overvoltage damage.
   电压调节变压器有助于保护敏感电子设备免受过电压损害。
3. 3. In this case, the voltage-regulating transformer was responsible for maintaining the stable voltage supply during the faulty circuit.
   在这种情况下，电压调节变压器负责在故障电路期间维持稳定的电压供应。