compound gear train

例句：

1. 1.The compound gear train is responsible for the smooth operation of the machine.
   复合齿轮传动装置负责机器的平稳运行。
2. 2. The engineer designed a compound gear train that could handle heavy loads.
   工程师设计了一种复合齿轮传动装置，可以处理重负载。
3. 3. The compound gear train was used to transmit power from the engine to the wheels.
   复合齿轮传动装置用于将发动机的动力传递到车轮。