differential regulating transformer

例句：

1. 1.The differential regulating transformer is used to adjust the speed of a motor.
   差动调节变压器用于调整电机的速度。
2. 2. The differential regulating transformer was designed to improve the efficiency of the power system.
   差动调节变压器被设计用来提高电力系统的效率。
3. 3. The differential regulating transformer is crucial for maintaining the stability of the electrical grid.
   差动调节变压器对于保持电网的稳定性至关重要。