Nuch努nun.希腊文的第13个字母NU.abbr.未知名(=name unknown)；努纳武特(=Nunavut；加拿大北部地区)nucleophilic agent亲核剂nucleolar assembly核仁装配nucleoprotein core核蛋白核心nucleopolyhedrosis核多角体病nucleoside oxidase核苷氧化酶Nuchen Nationality女真族nucleoprotein gene核蛋白基因nucleinate histone核酸组蛋白nucleic acid cycle核酸周期nucleon excitation核子激发