RAF

reactivity adjustment factor
反応率調整係数. 自動車の排気ガス規制基準で燃料の違いを補正する係数.
reactivity adjustment factor; a factor forexhaust emission standards for different fuels of a car; e.g. allowed NMOG(nonmethane organic gas) = standard / RAF; by the EPA(Environmental Protection Agency); ref. TLEV(tr

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