vacuum-controlled ignition advance

例句：

1. 1. The vacuum-controlled ignition advance system is crucial for maintaining the engine's optimal performance.
   真空控制的点火提前系统对于保持发动机的最佳性能至关重要。
2. 2. In this particular application, the vacuum-controlled ignition advance technology has proven to be highly effective in reducing emissions.
   在这个特定的应用中，真空控制的点火提前技术已经证明在减少排放方面非常有效。
3. 3. The engineers have been working on developing a vacuum-controlled ignition advance system that can improve fuel efficiencyand reduce engine noise.
   工程师一直在努力开发一种真空控制的点火提前系统，以提高燃油效率并减少发动机噪音。