Word: nitrogen
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BOWDITCH: Our present 1970 models have lowered oxides of nitrogen emissions 25 per cent on where they were in our 1969 models...
...much have you reduced nitrogen oxide in comparison with...
Interestingly enough, the gas turbine on the automobile will not meet the 1975 proposed standards. The oxides of nitrogen levels are too high...
Again, the steam engine does very well on hydro-carbon and carbon monoxide, but will not pass the oxides of nitrogen requirements...
...much have you succeeded in lowering the nitrogen oxides...