pukan.普克珠贝(夏威夷海滩上常见的白色有孔小贝壳；可用以串成项链或手镯)PUabbr.钚(=plutonium)abbr.推进装置(=propulsion unit)purulent conjunctivitis脓性结膜炎purine nucleotide cycle嘌呤核苷酸循环Puccinellia sevangensisn.塞文碱茅Purification of alcohol酒精提纯purchasing-power bondn.购买力债券purification of kerogen干酪根提纯Purification processing净化处理Puccinellia kashmirianan.克什米尔碱茅Purpura patula Linnaeusn.广口罗螺(骨螺超科；骨螺科)puromycin hydrochloride盐酸嘌呤霉素