HK
=Heater Kit 加热器箱;
High Key高位键;
Hong Kong 香港

DJ
Department of Justice 司法部[美];
Disc Jockey [美俚]无线电唱片音乐节目广播;
District Judge 地方初审法院法官[美];
Doctor Juris (=Doctor of Law)[拉]法学博士;
Dow Jones Co。
道·琼斯公司[美]

UN
=United Nations 联合国;
Uranyl Nitrate 硝酸铀铣;
Urea Nitrogen 【化】脲氮
PRC
=People's Republic of China 中华人民共和国;
Pressure Recording Controller 【自】压力记录控制器;
Program Route Control 程序进程控制;
Propulsion Research Corporation 推进研究公司[美]

WHO
=White House Office 白宫办公厅[美];
World Health Organization 世界卫生组织
VIP
=Variable Information Processing 可变信息处理;
Versatile Information Processor 多用途信息处理机;
Very important Person 贵宾, 要人, 极重要人物;
Video Integrator and Processor 显像积分记录器;
Video Interface Processor 视频接口处理器;
Visual Image Processor 目视图象处理器。