| Relevance | Word | Links |
| 100.00% | fuel/air | Concordance - Matched context |
| 83.68% | fuel-air | Concordance - Matched context |
| 81.46% | air-gasoline | |
| 80.41% | air-methanol | |
| 77.02% | gas/fuel | |
| 75.62% | airfuel | |
| 75.19% | vapor/liquid | |
| 74.81% | air-hydrocarbon | |
| 74.81% | air/exhaust | |
| 74.81% | air/fuel/oil | |
| 74.81% | air/gasoline | |
| 74.81% | anhydride-toluene | |
| 74.81% | butane/air | |
| 74.81% | by-air | |
| 74.81% | carbonate-toluene | |
| 74.81% | diamine-toluene | |
| 74.81% | egr/fuel | |
| 74.81% | ethanol-gasoline | |
| 74.81% | exhaust-liquid | |
| 74.81% | fuel-and-air | |
| 74.81% | fuel-oxidant | |
| 74.81% | fuel/carrier | |
| 74.81% | fuel/oxidizer | |
| 74.81% | gas-fuel | |
| 74.81% | gas-steam | |
| 74.81% | gaseous-air | |
| 74.81% | gasoline/air | |
| 74.81% | hydrogen-oxygen | |
| 74.81% | hydrogen/air | |
| 74.81% | ice-water | |
| 74.81% | lean-fuel | |
| 74.81% | methanol-gasoline | |
| 74.81% | methanol/gasoline | |
| 74.81% | oil-gas | |
| 74.81% | oxide/fuel | |
| 74.81% | oxidizer-fuel | |
| 74.81% | refrigerant/oil | |
| 74.81% | rich-fuel | |
| 74.81% | sample/fuel | |
| 74.81% | vapor-air | |
| 74.81% | water/diesel | |
| 74.81% | water/fuel | |
| 74.81% | water/hydrocarbon | |
| 72.51% | vapor/air | |
| 72.29% | alcohol-gasoline | |
| 67.74% | air/fuel | Concordance - Matched context |
| 64.14% | coal-gas | |
| 60.82% | air-fuel | Concordance - Matched context |
| 57.35% | e-r | |
| 55.03% | air-and-fuel | Concordance - Matched context |