Uniform Memory Access相同记忆存取 Upper Memory Area上部内存区 Unified Motherboard Architecture统一主板架构 Unified Memory Architecture统一内存架构 Unmanned Aircraft无人驾驶飞机 Unlicensed Mobile Alliance (AT&T Wireless, BT, Cingular and T-Mobile)手机联盟(AT&T未经许可的情况下,BT,Cingular和t) User Mode Audio (Microsoft)用户态的音频(微软) Ultra Wideband Medium Access Protocol超宽带介质存取协议 Uptown Merchants Association住宅区的商人协会 Union du Maghreb Arabe (Maghreb Arab Union, Morocco)Arabe杜马格里布联盟阿拉伯联盟,摩洛哥(马格里布地区) Unlicensed Mobile Access未经许可的情况下,手机 United Motorcoach Association曼联Motorcoach协会 University of Maine at Augusta在缅因州立大学 Ukrainian Museum-Archives (Cleveland, Ohio)乌克兰Museum-Archives(俄亥俄州克利夫兰的) Umbilical Mechanism Assembly脐机械装配