Uniform Distribution of Deaths (actuarial models)均匀分布的死亡(精算模型) Union for Democracy and Development (Mali)工会为民主发展(马里) Unconstrained Delay Data无延迟的数据 Urban Development Department城市开发部门 Universal Data Dictionary通用数据字典 Underworld Death Dealers (World of Warcraft guild)黑社会死亡经销商(魔兽世界协会) Unidade de Derivação DigitalUnidade de Derivação Digital Ultimate Daredevil (comic)终极艺高(喜剧) Urine Diversion Dehydration (toilet)(厕所小便导流脱水) Un-Merged Decision DepthUn-Merged决策的深度 Underwriting Decision Documentation (insurance)文件(保险)的承销决定 Utility Distribution Diagram效用分布图解 User Documentation Description用户文档描述 Urine Detection Device (Singapore)尿液检测装置(新加坡) Underage Drinking and Driving未到法定年龄的饮酒驾车