research octane

例句：

1. 1.The engine's performance depends on the research octane level of its fuel.
   发动机的性能取决于其燃料的研究辛烷值。
2. 2.The car's fuel efficiency is directly related to the research octane level of its gasoline.
   汽车的燃油效率与汽油的研究辛烷值直接相关。
3. 3. The manufacturer claims that their new engine has a higher research octane level than its competitors.
   制造商声称他们的新引擎比竞争对手具有更高的研究辛烷值。