hydrogenite氢发生剂
hydrogenn.氢
hydrogen gas cylinder氢气钢瓶
hydrogenation solvent氢化溶剂
hydrogen ion activity氢离子活度
hydrogenated gasoline氢化汽油
hydrogen retrograding氢气反凝
hydrogen permeability氢渗透系数
hydrogen carbon ratio氢碳比率
hydrogenated base oil加氢基础油
hydrogen atomic clock氢原子钟
hydrogenated products加氢产品