Anthropomorphic Test Dummy拟人试验安慰剂 Actual Time of Departure实际出发时间 Asynchronous Time Division异步时分 Automatic Tape Degausser磁带自动去磁器 Assembly Technology Development装配技术发展 Automatic Tube Dispenser全自动管分配器 Advanced Technologies Demonstration (ARPA/Bell Atlantic)先进的科技示范(ARPA /贝尔大西洋) Advanced Technology Development先进的科技发展 Aerospace Technology Division (Library of Congress; formerly Aerospace Information Division)航天技术部门(美国国会图书馆;从前航天信息分化的) Acceptance and Takeover Date验收和收购日期 Associação Terras DentroAssociação Terras Dentro Association of Telecommunications Dealers电信经销商协会 Atmospheric Technology Division (US National Center for Atmospheric Research)大气的技术部门(美国国家大气研究中心) Automated Training Device自动化的训练装置 Aid to the Totally Disabled援助的完全禁用