Unika尤尼卡牌照相机UNIabbr.印度联合新闻社(=United News of India)unidentified gunman身份不明的枪手unipolar conduction单极传导unidirectional link单向链路unincorporated bank未立案银行uniprocesser system单处理系统unified book number统一书号unidentified marker不能确认的标记(染色体)unified air defense联合防空unimodular function幺模函数uninsulated surface非绝缘面