direct current motor

例句：

1. 1.The new car uses a direct current motor to power its wheels.
   这款新车使用直流电动机来驱动车轮。
2. 2.The DC motor is responsible for the smooth operation of the conveyor belt.
   直流电机负责输送带的平稳运行。
3. 3.The DC motor is much more efficient than an AC (alternating current) motor.
   直流电机比交流电机更高效。