Definition of octane number in English:

octane number

(also octane rating)

noun

A figure indicating the anti-knock properties of a fuel, based on a comparison with a mixture of isooctane and heptane.
辛烷数，辛烷值
Example sentencesExamples
- Using a fuel of a higher octane rating than that recommended for your car doesn't improve its performance.
- The higher the octane number you see on a gas pump, the more the fuel can be compressed before it explodes.
- However, ethanol has a good octane rating of around 112 and a high heat-off evaporation so it cools down the intake charge.
- In particular, the formation of branched alkanes increases the octane number and combustibility of the resulting hydrocarbon.
- Pyrolysis oil can also be added to gasoline to increase its octane rating.

Definition of octane number in US English:

octane number

(also octane rating)

nounˈäkˌtān ˌnəmbər

A figure indicating the antiknock properties of a fuel, based on a comparison with a mixture of isooctane and heptane.
辛烷数，辛烷值
Example sentencesExamples
- However, ethanol has a good octane rating of around 112 and a high heat-off evaporation so it cools down the intake charge.
- The higher the octane number you see on a gas pump, the more the fuel can be compressed before it explodes.
- In particular, the formation of branched alkanes increases the octane number and combustibility of the resulting hydrocarbon.
- Using a fuel of a higher octane rating than that recommended for your car doesn't improve its performance.
- Pyrolysis oil can also be added to gasoline to increase its octane rating.

单词	octane number
释义	Definition of octane number in English: octane number (also octane rating) noun A figure indicating the anti-knock properties of a fuel, based on a comparison with a mixture of isooctane and heptane. 辛烷数，辛烷值 Example sentencesExamples Using a fuel of a higher octane rating than that recommended for your car doesn't improve its performance. The higher the octane number you see on a gas pump, the more the fuel can be compressed before it explodes. However, ethanol has a good octane rating of around 112 and a high heat-off evaporation so it cools down the intake charge. In particular, the formation of branched alkanes increases the octane number and combustibility of the resulting hydrocarbon. Pyrolysis oil can also be added to gasoline to increase its octane rating. Definition of octane number in US English: octane number (also octane rating) nounˈäkˌtān ˌnəmbər A figure indicating the antiknock properties of a fuel, based on a comparison with a mixture of isooctane and heptane. 辛烷数，辛烷值 Example sentencesExamples However, ethanol has a good octane rating of around 112 and a high heat-off evaporation so it cools down the intake charge. The higher the octane number you see on a gas pump, the more the fuel can be compressed before it explodes. In particular, the formation of branched alkanes increases the octane number and combustibility of the resulting hydrocarbon. Using a fuel of a higher octane rating than that recommended for your car doesn't improve its performance. Pyrolysis oil can also be added to gasoline to increase its octane rating.
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