timing gearbox

例句：

1. 1. The timing gearbox in the caris responsible for adjusting the engine's speed.
   汽车中的定时齿轮箱负责调整发动机的速度。
2. 2. The timing gearbox in themachine is crucial to its operation.
   机器中的定时齿轮箱对其运行至关重要。
3. 3. The engineer hadto replace the timing gearbox due toa faulty component.
   由于一个故障组件，工程师不得不更换定时齿轮箱。