direct current axle generator

例句：

1. 1.The generator is used to convert direct current into alternating current.
   发电机用于将直流电转换为交流电。
2. 2. The axle of the car is powered by the generator.
   汽车的轴由发电机提供动力。
3. 3. The generator is essential for powering the lights in the factory.
   发电机对于工厂里照明的电力供应至关重要。