uspron.我们(we的宾格)uswc(uncacheabled speculative write combination无缓冲随机联合写操作)uswv(uncacheable speculative write-combining非缓冲随机混合写入)USDI=United States Department of the Interior 美国内政部USNAUnited States Naval Attach；é美国海军武官； abbr.；=United States Naval Academy 美国海军军官学校USRTn.(universal synchronous receiver transmitter)通用同步接收/发送器USDL=United States Department of Labor 美国劳工部Usum乌苏姆USTRn.美国贸易代表办公室USIM全球用户身份模块USPOn.美国专利局