| Relevance | Word | Links |
| 100.00% | air/fuel | Concordance - Matched context |
| 86.15% | air-fuel | Concordance - Matched context |
| 78.85% | airfuel | |
| 78.60% | gas/fuel | |
| 76.46% | air-methanol | |
| 68.80% | air-gasoline | |
| 68.80% | fuel-air | Concordance - Matched context |
| 68.73% | air-to-fuel | Concordance - Matched context |
| 67.74% | fuel/air | Concordance - Matched context |
| 66.53% | fuel-to-air | Concordance - Matched context |
| 59.01% | acid-to-oil | |
| 59.01% | air-furl | |
| 59.01% | area/intake | |
| 59.01% | catalyst-to-oil | |
| 59.01% | fuel-efficient | |
| 59.01% | hydrogen/carbon | |
| 59.01% | hydrogen/oil | |
| 59.01% | ivt | |
| 59.01% | length-to-diameter | |
| 59.01% | line/quick | |
| 59.01% | mark-space | |
| 59.01% | mark/space | |
| 59.01% | mode-changeover | |
| 59.01% | output-to-input | |
| 59.01% | power-to-weight | |
| 59.01% | pulse-to-interval | |
| 59.01% | pulse/pulse-pause | |
| 59.01% | reactant/olefin | |
| 59.01% | silica-to-alumina | |
| 59.01% | silica/alumina | |
| 59.01% | solvent-to-oil | |
| 59.01% | solvent/oil | |
| 53.20% | vapor/liquid | |
| 52.39% | air-hydrocarbon | |
| 52.39% | air/exhaust | |
| 52.39% | air/fuel/oil | |
| 52.39% | air/gasoline | |
| 52.39% | anhydride-toluene | |
| 52.39% | butane/air | |
| 52.39% | by-air | |
| 52.39% | carbonate-toluene | |
| 52.39% | diamine-toluene | |
| 52.39% | egr/fuel | |
| 52.39% | ethanol-gasoline | |
| 52.39% | exhaust-liquid | |
| 52.39% | fuel-and-air | |
| 52.39% | fuel-oxidant | |
| 52.39% | fuel/carrier | |
| 52.39% | fuel/oxidizer | |
| 52.39% | gas-fuel | |