pretuning controls

例句：

1. 1. The pretuning controls are designed to optimize the performance of the engine.
   预调控制装置旨在优化发动机的性能。
2. 2. The pretuning controls were installed to improve fuel efficiency.
   预调控制装置的安装是为了提高燃油效率。
3. 3. The engineers used the pretuning controls to fine-tune the car's performance.
   工程师们使用预调控制装置来调整汽车的性能。