free-gas saturation

例句：

1. 1.The process of free-gas saturation is crucial for the operation of the engine.
   自由气体饱和过程对发动机的运行至关重要。
2. 2.The research on free-gas saturation has provided valuable insights into the behavior of gases in combustion engines.
   关于自由气体饱和的研究为燃烧发动机中气体的行为提供了宝贵的见解。
3. 3. In the design of a new fuel system, it is important to consider the free-gas saturation of the fuel and its impact on the performance of the engine.
   在设计新的燃料系统时，需要考虑燃料的自由气体饱和度及其对发动机性能的影响。