American Society of Dermatologic Surgery美国皮肤外科学会的 Advanced SEAL Delivery System先进的密封系统 American Society For Dermatologic Surgery美国皮肤外科学会 Advanced Sensor Distribution System先进的传感器的分销系统 Automatic Shut Down Sequence自动关闭序列 Accunet Spectrum of Digital Services (AT&T)Accunet谱的数字服务(AT&T) Advanced SCM Delivery System先进的配置管理系统 Airborne Serial Data System空降串行数据系统 Advanced Strap Down Seeker (Missile Defense Agency / US Army SMDC)先进的带子下球手(导弹防御局/美国军队SMDC) Air Situation Display System空气情况显示系统 ARTS Software Development System艺术的软件开发系统 A S D Systems一个是D系统 Assessment And Standards Development Services评估和标准的发展服务 Applied Systems And Decision Support应用系统和决策支持 Autonomous Satellite Docking System自主卫星对接的系统