double-point gear

例句：

1. 1. The double-point gear is the most critical component in this machine.
   这个机器中最关键的部件是双点齿轮。
2. 2. The double-point gear is responsible for transmitting power from the engine to the wheels.
   双点齿轮负责将发动机的动力传递到车轮。
3. 3.The double-point gear has a significant impact on the performance of the machine.
   双点齿轮对机器的性能有显著影响。