pytpretty young thing 可爱的年轻女郎、小动物； abbr.；=pretty young thing 漂亮的小东西Pn.字母Pp-nitrochlorobenzene[化] 对硝基氯苯p-nitrosulfathiazole[医] 对硝基磺胺噻唑pyridine hemochromogen吡啶血色原pyostomatitis vegetans增生性脓性口腔炎, 增殖性脓性口炎P/M brake materials粉末冶金刹车材料Pygmaeopremna herbacean.千解草Pyloric antral atresia幽门窦闭锁Pythium polypapillatumn.多突腐霉p-Phenyltolyl Ketone对苯甲苯甲酮, 对甲苯苯甲酮pyrrobutamine compound复合吡咯丁胺