Diagnostic Tests of Language Skills诊断测试的语言技能 Doctrine, Training, Leader, Soldiers教条、培训、领袖、士兵 Distributed Theater Level Simulation分布式剧院级仿真 Descriptive Top-Level Specification描述性的顶层的规格 Datagram Transport Layer Security (IETF)数据传输层安全(IETF)