Union Inspection Notice工会稽查通知书 Universal Internet Number通用互联网号码 University Identification Number大学识别码 Unit Identification Number单位识别码 User Identification Number (ICQ)用户标识号(英语) Useless Inert Nothing无用的惰性 Union Improvement Notice (UK)结合改进通知(英国) Unemployment Identification Number失业识别码 Unique Identification Number独特识别码 Quincy, IL, USA - Baldwin Field (Airport Code)昆西,美国-鲍德温,(机场代码) Universal Identification Number通用识别号码 User Identification Number用户标识号 Quincy, Illinois USA昆西,伊利诺斯州美国 Unimobile Intelligent NetworkUnimobile智能网络 User Intelligent Network用户智能网络