略語大辞典 [Car] 34 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 丸善「略語大辞典」JLogosID : 11857369