differential chain block

例句：

1. 1. The differential chain block isused to adjust the speed of the motor.
   差动链块用于调整电机的速度。
2. 2. Theengineer designed a new differential chain block toimprove efficiency.
   工程师设计了一种新型的差动链块以提高效率。
3. 3. The differentialchain block was responsible fortransmitting power from the engineto the wheels.
   差动链块负责将发动机的动力传递到车轮上。