| 序号 | 英文 | 音标 | 词性 | 中文 |
| | DFSR | | | =Directorate of Flight Safety Research 飞行安全研究局[美] |
| | DFSU | | | =Disk File Storage Unit 磁盘文件存贮器 |
| | DFStn | | | =Direction-Finding Station[无]测向台 |
| | DFT | | | 二维傅里叶变换 |
| | DFW | | | =Disk File Write 磁盘文件写出 |
| | DG | | | =Defence Guides 国防指南[英] |
| | DG synchro amplifier | | | 差动同步放大器 |
| | DGAS | | | =Double Glazing Advisory Service 双玻璃装配咨询委员会(IGA) |
| | DGE | | | =Division of Geothermal Energy 地热能源部[美] |
| | DGP | | | =Dangerous Goods Panel 危险品专家小组(联合国ICAO) |
| | DGR | | | =Directorate of Geophysics Research 地球物理研究处([美]空军) |
| | DGS | | | =Data Ground Station 数据地面站 |
| | DGTG | | | =Director General of Technical Development 技术发展处处长 |
| | DGTO | | | =Directorate General of Technical Development 技术发展总局[印度] |
| | DGW | | | =Director General of Weapons [Works]兵器[工程]总监[英] |
| | DH | | | =Design Handbook 设计手册 |
| | DHA | | | =De Havilland Aircraft Co, ltd 戴哈维兰德飞机(有限)公司[英] |
| | DHAA | | | =Dehydro-Ascorbic Acid 脱氢醋酸 |
| | DHC | | | =De Havilland Aircraft of Canada, Ltd 加拿大戴哈维兰德飞机(有限)公司 |
| | DHD | | | =Down-Hole Drill 潜孔钻机 |
| | DHE | | | =Data Handling Equipment 数据处理设备 |
| | DHF | | | =Dilute Hydrofluoric Acid 稀氟氢酸 |
| | DHG | | | =Double Helical Gear 人字齿轮 |
| | DHL | | | 敦豪速递公司 |
| | DHP | | | =Data Handling Program 数据处理程序 |
| | DHQ | | | =Division Headquarters 师部 |
| | DHS | | | =Data Handling System 数据处理系数 |
| | DHSS | | abbr. | Department of Health and Social Services(英国)卫生和社会事务部 |
| | DHTML | | | 简而言之，动态HTML就是一种即使在网页下载到浏览器以后，仍然能够随时变换的HTML。 |
| | DI | | | =Data Input 数据输入 |
| | DIA | | abbr. | Defense Intelligence Agency(美国)国防情报局 |
| | DIABLO | | | 暗黑破坏神，一个著名游戏的名称，又称恐惧 |
| | DIAC | | | =Defense Industry Advisory Council 国防工业咨询委员会[美] |
| | DIAD | | | =Drum Information Assembler and Dispatcher 磁鼓信息收集与分配器 |
| | DIB | | | 设备无关点位图。 |
| | DIBK | | | =Diisobutyl Ketone二异丁基酮 |
| | DIC | | | =Density Indicating Controller (油)密度指示控制器 |
| | DICBM | | | =Detection of Intercontinental Ballistic Missile (System)洲际弹道导弹控测系统 |
| | DID | | | =Digital Image Data 数字影象数据 |
| | DIDAC | | | =Digital Data Communication 数字数据通信 |
| | DIDP | | | =Di-iso-decyl Phthalate[化]邻苯二甲酸二异癸酯 |
| | DIE | | | =Danish Institute for the International Exchange of Scientific and Literary Publications 丹麦国际科学及文学出版物交流学会 |
| | DIEA | | | =Dictionary of Industrial Engineering Abbreviations《工业工程缩略语词典》 |
| | DIF | | | 数据交换格式。 |
| | DIFAR | | | =Direction-Finding and Ranging 定向与测距 |
| | DIFC | | | =Difference Counter 差分计数器 |
| | DIG | | | =Deputy Inspector-General 副监察长 |
| | DIGCOM | | | =Digital Communication System 数字通信系统 |
| | DIGRO | | | =Digital Readout 数字读出 |
| | DIGS | | | =Digital Inertial Guidance System 数字惯性制导系统 |
| | DIIC | | | =Dielectrically Isolated Integrated Circuit 介质绝缘集成电路 |
| | DIL | | | =Digital Integrated Logic 数字集成逻辑 |
| | DILS | | | =Dataskil Integrated Library System 数据技术综合图书馆系统([英] ICL) |
| | DIM | | | =Design Information Manual设计资料手册 |
| | DIMP | | | =Defence Industry and Material Policy Division [澳] 国防工业与材料政策部 |
| | DIMPLE | | | =Deuterium Moderated Pile Low Energy 氘中级堆, 小功率重水反应堆[英] |
| | DIMUS | | | =Digital Multi-beam Steering System Sonar 数字多波束监控系统声纳 |
| | DIN | | n. | 〈摄〉度，定（德国工业标准感光片感光度单位 ） |
| | DIN scale | | | 德国标准感光度 |
| | DINA | | | =Digital Network Analyser 数字网络分析器 |
| | DINS | | | =Digital Inertial Navigation System 数字惯性导航系统 |
| | DIOA | | | =diisooctyl adipate 已二酸二异辛酯 |
| | DIOB | | | =Digital Input/Output Buffer 数字输入/输出缓冲 |
| | DIOS | | | =Distributed Input/Output System 分布式输入／输出系统 |
| | DIOZ | | | =di-isooctylazelate 壬二酸二异辛酯 |
| | DIP | | | =Double In-line Package 双列直插式组装 |
| | DIPAE | | | =diisopropylaminoethanol 二异丙基氨基乙醇 |
| | DIPE | | | =diisopropylether 二异丙醚 |
| | DIPEC | | | =Defence Industrial Plant Equipment Center 国防工业工厂设备中心([美] USDOD) |
| | DIPI | | abbr. | 输卵管直接人工授精 |
| | DIPPP | | | =diisopropylpyrophosphoric acid 二异丙基焦磷酸 |
| | DIPS | | | =Dendenkosha Information Processing System 日本电信电话公司信息处理系统 |
| | DIR | | | =Defence Industrial Research Programme 国防工业研究计划([加]DRB) |
| | DIR COUP | | | =Directional Coupler[无]定向耦合器 |
| | DIS | | | =Data Input Supervisor 数据输入监控器 |
| | DISC | | | =Defence Industrial Supply Center 国防工业品供应中心[美] |
| | DISCO | | | =Defense Industrial Security Clearance Office 国防工业安全许可局([美]USDOD) |
| | DISCOM | | | =Digital Selective Communications 数学选择通信 |
| | DISP | | | =Document Information Service Program 文件信息服务程序 |
| | DISS | | | =Diopside Solid Solution 透辉石固溶体 |
| | DISSPLA | | | =Display Integrated Software System and Plotting Language显示 综合软件系统与绘图语言 |
| | DIT | | | =Detroit Institute of Technology 底特律理工学院 [美] |
| | DITC | | | =Department of Industry, Trade and Commerce 工业、贸易和商业部[加] |
| | DIU | | | =Digital Input Unit 数字输入器 |
| | DIV | | | =Digital Input Group Voltage 数字输入组电压 |
| | DIVADS | | | =Divisional Air Defence System 分区防空系统[美] |
| | DIVIC | | | =Digital Variable Increment Commputer 数字可变增量计算机 |
| | DIVOT | | | =Digital to Voice Translator 数字-声音转换器 |
| | DIY | | abbr. | Do It Yourself, 自己动手做 |
| | DJ | | abbr. | （广播电台）流行音乐播音员，流行音乐节目主持人 (disc jockey) |
| | DJI | | | =Dow-Jones Index 道·琼斯指数[美] |
| | DL | | | =Data Link 数据传输线路 |
| | DLA | | | =Defense Logistics Agency 国防后勤局([美]USDOD) |
| | DLC | | | =Data Link Control数据链路控制 |
| | DLCN | | | =Destributed Loop Computer Network 分布循环计算机网 |
| | DLCS | | | =Data-Line Concentration System 数据线路集中系统 |
| | DLD | | | =Dark Line Defect 暗线缺陷 |
| | DLE | | | =Data Link Escape Character 数据传送换码字符(通信控制用) |
| | DLG | | | 定义对话框资源的独立文件。这种文件对于VC工程来说并非必需，因为VC一般把对话框资源放在.RC资源定义文件中。 |
| | DLI | | | =Department of Labour and Industry 劳工部[澳] |
| | DLIMP | | | =Descriptive Language for Implementing Macro Processor 实现宏处理程序的描述语言 |