PZTn.压电跃变Pn.字母Ppyelorenal backflow肾盂-肾反流Pyrus sinkiangensisn.新疆梨P.E consciousness体育意识Pycnonotus Aungates白喉红臀鹎p-propenyl anisol对-丙烯基苯甲醚Pygeretmus shitkovin.大肥尾跳鼠p - chlorotoluene对氯甲苯Pycnonotus sinensisn.白头鹎Pythagorean triplet毕达哥拉斯三元数组p-menthanediamine对[艹孟]烷二胺（MDA）