碳化氢 tànhuàqīng hydrocarbon Origin Definitions Defs Strokes Stroke Words Sentences Sents 碳化 tànhuà carbonize; carbonization to turn into carbon, or the process of doing so (e.g. through chemical action, heat, or dry distillation)氢 氫 qīng noun hydrogen the chemical element hydrogen, a colorless, odorless, and tasteless gas that is the lightest of all known substances; usually referred to as 氢气 qīngqì