United Federation of Teachers(美国纽约)教师联合会 Uracil优福定 Ultrafast Track快速轨道 Tegafur-Uracil (chemotherapy)Tegafur-Uracil(化学) Uniform File Transfer (Hekimian)统一的文件传输(Hekimian) Unofficial Foreign Travel非官方的国外旅行 Unsolicited File Transfer Protocol不请自来的文件传输协议 Unit Functional Training (US Army)我们的部队单位功能训练 Unified Field Theory (physics)统一场论(物理) Undergraduate Flying Training本科飞行训练 Up for Trade对贸易 Universal Fiber Terminal普遍的光纤终端 Unavailable for Tasking设计者出场 Unified Field Test统一的现场试验 Upper Fuel Tank上层燃料箱