cetane

例句：

1. 1. The engine's performance depends on the cetane content of the fuel.
   发动机的性能取决于燃料的辛烷值。
2. 2. The new engine uses a higher cetane blend to improve efficiency.
   新引擎使用了更高辛烷值的混合物以提高效率。
3. 3. The cetane content in gasoline has been reduced to reduce emissions.
   汽油中的辛烷含量已被降低以减少排放。