短语词组短語dimethyl pyridine 二甲基吡啶;繙譯trimethyl pyridine 三甲基吡啶ethyl pyridine 乙基吡啶pyridine acid 吡啶酸pyridine derivatives 吡啶衍生物Pyridine hydrofluoride 吡啶氫氟酸鹽;氟化氫吡啶polyvinyl pyridine 聚乙烯吡啶refined pyridine 精吡啶pyridine pathway 吡啶途逕 返回 pyridine