spark timing

例句：

1. 1. The car's engine needs to be checked for proper spark timing.
   汽车的引擎需要检查正确的点火时间。
2. 2.Engineers use spark timing to optimize combustion efficiency.
   工程师使用火花时间来优化燃烧效率。
3. 3.The manufacturer claims that their new model has improved spark timing for better performance.
   制造商声称他们的新型号改进了火花时间，以获得更好的性能。