| Subject | English | French |
| environ. | denitrification module | module de dénitrification |
| environ. | denitrification of waste gas | dénitrification des gaz de fumées |
| environ. | denitrification of waste gas Current methods for controlling NOx emissions in motor vehicles include retardation of spark timing, increasing the air/fuel ratio, injecting water into the cylinders, decreasing the compression ratio, and recirculating exhaust gas. For stationary sources, one abatement method is to use a lower NOx producing fuel or to modify the combustion process by injecting steam into the combustion chamber | dénitrification des effluents gazeux |
| environ. | denitrification of waste gas | dénitrification des gaz résiduaires |
| environ. | denitrification of waste gas | dénitrification des gaz de combustion |
| environ. | denitrification of waste gas | dénitrification des effluents gazeux |