吡嗪 bǐqín pyrazine Definitions Defs Origin Strokes Stroke Words Sentences Sents 吡嗪 bǐqín pyrazine (loanword) pyrazine; a specific type of organic chemical compound containing a nitrogen-rich ring structure
吡嗪 bǐqín pyrazine (loanword) pyrazine; a specific type of organic chemical compound containing a nitrogen-rich ring structure
