Subscriber Unit用户单元 Service Unit后勤部队 Soviet Union苏联 Signaling Unit信令单元 Stanford University斯坦福大学 surface charge地面运输费，代理人收取此费为SUA Sonics and Ultrasonics声学与超声学 Spitali Ushtarak (Albanian: Military Hospital)Spitali Ushtarak(阿尔巴尼亚:军事医院) Sihala Urumaya (political party, Sri Lanka)Sihala Urumaya(政党、斯里兰卡) Stockholm University (Sweden)瑞典斯德哥尔摩大学) Supply-Use (tables)Supply-Use(表) Safe, Undetected Failure安全、未失效 Statens Uddannelsesstøtte (state education grant and loan scheme in Denmark)Statens Uddannelsesstøtte (state education grant and loan scheme in Denmark) Sub Urban Area (terrain type)次级市区(类型)的地形 Sahlgrenska Universitetssjukhuset (Gothenburg, Sweden hospital)Sahlgrenska Universitetssjukhuset(医院)