| Relevance | Word | Links |
| 100.00% | fuel-air | Concordance - Matched context |
| 87.45% | air-gasoline | |
| 85.94% | air-methanol | |
| 83.68% | fuel/air | Concordance - Matched context |
| 82.08% | gas/fuel | |
| 80.78% | air-hydrocarbon | |
| 80.78% | air/exhaust | |
| 80.78% | air/fuel/oil | |
| 80.78% | air/gasoline | |
| 80.78% | anhydride-toluene | |
| 80.78% | butane/air | |
| 80.78% | by-air | |
| 80.78% | carbonate-toluene | |
| 80.78% | diamine-toluene | |
| 80.78% | egr/fuel | |
| 80.78% | ethanol-gasoline | |
| 80.78% | exhaust-liquid | |
| 80.78% | fuel-and-air | |
| 80.78% | fuel-oxidant | |
| 80.78% | fuel/carrier | |
| 80.78% | fuel/oxidizer | |
| 80.78% | gas-fuel | |
| 80.78% | gas-steam | |
| 80.78% | gaseous-air | |
| 80.78% | gasoline/air | |
| 80.78% | hydrogen-oxygen | |
| 80.78% | hydrogen/air | |
| 80.78% | ice-water | |
| 80.78% | lean-fuel | |
| 80.78% | methanol-gasoline | |
| 80.78% | methanol/gasoline | |
| 80.78% | oil-gas | |
| 80.78% | oxide/fuel | |
| 80.78% | oxidizer-fuel | |
| 80.78% | refrigerant/oil | |
| 80.78% | rich-fuel | |
| 80.78% | sample/fuel | |
| 80.78% | vapor-air | |
| 80.78% | water/diesel | |
| 80.78% | water/fuel | |
| 80.78% | water/hydrocarbon | |
| 80.51% | airfuel | |
| 78.57% | vapor/liquid | |
| 78.30% | vapor/air | |
| 78.06% | alcohol-gasoline | |
| 68.80% | air/fuel | Concordance - Matched context |
| 67.45% | coal-gas | |
| 63.04% | air-fuel | Concordance - Matched context |
| 61.93% | e-r | |
| 59.42% | air-and-fuel | Concordance - Matched context |