| Subject | English | French |
| mech.eng. | air fuel ratio | proportion du mélange |
| mech.eng. | air fuel ratio | rapport air-combustible |
| mech.eng. | air fuel ratio | richesse du mélange |
| mech.eng. | air fuel ratio | dosage de la richesse du mélange |
| tech. | air/fuel ratio | rapport air/combustible |
| phys.sc., tech., law | air/fuel ratio | rapport air-carburant |
| phys.sc., tech., law | air/fuel ratio | richesse du mélange |
| phys.sc., tech., law | air/fuel ratio | rapport pondéral air-carburant |
| gen. | air/fuel ratio | valeur d'excès d'air |
| mech.eng. | air-fuel ratio control | commande d'accélération |
| mech.eng. | fuel/air equivalency ratio | rapport air-combustible |
| mech.eng. | fuel/air equivalency ratio | proportion du mélange |
| mech.eng. | fuel/air equivalency ratio | dosage de la richesse du mélange |
| mech.eng. | fuel/air equivalency ratio | richesse du mélange |
| transp. | fuel-air ratio | rapport carburant/air |
| UN | leaner air-fuel ratio | appauvrissement du mélange air-carburant |
| tech., mech.eng. | overall air-fuel ratio | rapport global air-combustible |
| mech.eng. | ratio of fuel air mixture | dosage de la richesse du mélange |
| mech.eng. | ratio of fuel air mixture | rapport air-combustible |
| mech.eng. | ratio of fuel air mixture | proportion du mélange |
| mech.eng. | ratio of fuel air mixture | richesse du mélange |
| gen. | stoichiometric air/fuel ratio | rapport stoechiométrique air/carburant |
| gen. | stoichiometric air/fuel ratio | rapport air-carburant stoéchiométrique |
| phys.sc., tech., law | stoichiometric fuel/air ratio | rapport air-carburant stoéchiométrique |
| gen. | stoichiometric fuel/air ratio | rapport stoechiométrique air/carburant |
| phys.sc., tech., law | stoichiometric ideal air/fuel ratio | rapport air-carburant stoéchiométrique |
| gen. | stoichiometric ideal air/fuel ratio | rapport stoechiométrique air/carburant |
| tech., mech.eng. | trapped air-fuel ratio | rapport air enfermé-combustible |
