碳化氢 Traditional form: 碳化氫 Pinyin (reading): tànhuàqīng Definitions: hydrocarbon same as 烴/烃 (tīng) Characters: 碳 - carbon 化 - to change, to convert, to reform; -ize 氢 - ammonia Traditional characters: 碳 - carbon 化 - to change, to convert, to reform; -ize 氫 - ammonia