Nastn.纳斯特NASabbr.(美国)国家科学院(=National Academy of Sciences)abbr.国家农业学会(=National Agricultural Society)abbr.国家听力学会(=National Auditus Society)Nasmyth membrane内史密斯膜, 原发性釉护膜, 牙外皮, 釉小皮nasociliary root鼻睫根nasomental reflex[医] 鼻颏反射nasolacrimal dust鼻泪管Nasir-ud-deen纳西尔丁nasopalatine duct鼻腭管nasolabial sulcus鼻唇沟nasopharynx tumor鼻咽肿瘤nasolacrimal duct鼻泪管nasoalveolar cyst鼻牙槽囊肿