| 序号 | 英文 | 音标 | 词性 | 中文 |
| | SADAR | | | =Satellite Data Reduction Processor System 卫星数据简化处理机系统 |
| | SADARM | | abbr. | [军] Senes and Destroy Armor, 检测和摧毁装甲车辆 |
| | SADC | | | =Sequential Analogue-Digital Computer 时序模拟-数字计算机 |
| | SADIC | | | =Solid-state Analog-to-Digital Computer 固态模拟-数字计算机 |
| | SADIE | | | =Scanning Analog-to-Digital Input Equipment 扫描模拟-数字输入设备 |
| | SADSAC | | | =Seiler ALGOL Digitally Simulated Analogue Computer 塞勒ALGOL数字模拟的模拟计算机 |
| | SADT | | | =Super Alloy Diffused Base Transistor 超合金型扩散基极晶体管 |
| | SAE | seI | abbr. | Self-Addressed Envelope, 回信用信封 |
| | SAF | | | =Secretary of the Air Force 空军部长[美] |
| | SAFCON | | | =International Conference on Safety of Life at Sea 国际海上人命安全会议 |
| | SAG | | | =Standard Address Generator 标准地址生成程序 |
| | SAGE | | | = Semi-Automatic Ground Environment 半自动地面防空警备系统[装置] |
| | SAHARA | | | =Synthetic Aperture High Altitude Radar综合孔径高空雷达 |
| | SAIB | | | =Sucrose Acetate Isobutyrate 醋酸-异丁酸蔗糖酯 |
| | SAIF | | | =South African Institute of Foundrymen 南非铸造工作者学会 |
| | SAIM | | | =South African Institute of Management 南非管理学会 |
| | SAINT | | | =Satellite Inspection and Interception 卫星监控与拦截 |
| | SAL | | | =Service Ation Log 维修记录 |
| | SALE | | | =Simple Algebraic Language for Engineers 工程师用简明代数语言 |
| | SALS | | | =small angle light scattering 小角光散射 |
| | SALT | | abbr. | 限制战略武器会谈 |
| | SALUT | | | =sea, air, land and underwater targets 海、空、陆地和水下目标 |
| | SAM | sAm | abbr. | 萨姆防空导弹 |
| | SAM Site | | | 萨姆防空导弹发射装置 |
| | SAMA | | | =Scientific Apparatus Makers Association 科学仪器厂商学会 |
| | SAME | | | =Society of American Militry Engineers 美国军事工程师学会 |
| | SAMOS | `seImCs | abbr. | 萨摩斯岛[希腊](在爱琴海东部) |
| | SAMPE | | | =Science of Advanced Materials and Process Engineering 高级材料与加工工程科学 |
| | SAMSO | | | =Space and Missile Systems Organization 空间与导弹系统组织([美]空军) |
| | SANS | | | =Ships Acoustic Navigation neutron System 船用声学导航系统 |
| | SAO | | | =Smithsonian Astrophysical Observatory 史密森天体物理观测台[美] |
| | SAP | | | =Satellite Automation System 卫星自动控制系统 |
| | SAPCHE | | | =Semi-Automatic Program Checkout Equipment半自动程序检验装置 |
| | SAPL | | | =Service Action Parts List 维修零(部)件一览表 |
| | SAR | | | =Safety Analysis Report 安全分析报告 |
| | SARAH | | | =Search and Rescue and Homing 搜索、营救和归航(无线电信标) |
| | SARBE | | | =Search and Rescue Beacon Equipment 搜索和营救信标设备 |
| | SARC | | | =Split Armature Receiver Capsule 分离防护接收舱 |
| | SARUS | | | =Search and Rescue Using Satellites 搜索和营救用卫星 |
| | SAS | | abbr.；abbr. | abbr. Scandinavian Airlines System,斯堪的纳维亚航空公司；abbr. Special Air Service, 英国空军特别部队 |
| | SASE | | abbr. | self-addressed stamped envelope 贴足邮资写明发信人(自己) 姓名地址的回信信封 |
| | SASI | | | =Society of Air Safety Investigators空中安全调查员学会 |
| | SASS | | | =Strategic Alert Sound Systom 战略警报系统 |
| | SASSY | | | =small aperture separator system小隙缝分离器系统 |
| | SATAN | | | =Satellite Automatic Tracking Antenna 卫星自动跟踪天线 |
| | SATB | | abbr. | soprano, alto, tenor, bass[音]女高音、女低音、 男高音和男低音 |
| | SATCOM | `sAtkCm | abbr. | Satellite Communications (Agency)卫星通信( 机构) |
| | SATCOMA | | abbr. | Satellite Communications Agency 卫星通信机构 |
| | SATE | | | =Semi Automatic Test Equipment 半自动试验设备 |
| | SATIN | | | =Satellite Inspector System 卫星检查系统 |
| | SATO | | | =Self-Aligned Thick-Oxide (technique)自对准厚氧化物层(技术) |
| | SATRAC | | | =Satellite Automatic Terminal Rendezvous and Coupling 卫星自动端部会合与连接 |
| | SATS | | | =Small Airfield for Tactical Support 战术支援小型机场 |
| | SAXD | | | =Small Angle X-ray Diffraction 小角度X射线衍射 |
| | SAXS | | | =Small Angle X-ray Scattering 小角度X射线散射 |
| | SAYE | | abbr. | （英国的）工资扣存储存存款(save-as-you-earn) |
| | SB | | | =Sales Book 售货簿 |
| | SBA | | abbr. | Small Business Administration, 小型企业管理局 |
| | SBAC | | | =Society of British Aerospace Companies 英国航空与航天公司学会 |
| | SBC | | | 单板机 |
| | SBC case | | n. | 全角 |
| | SBG | | abbr. | [军] Smoothbore Gun, 滑膛枪 |
| | SBM | | abbr. | single buoy moor(ing) [海]单点系泊,单浮筒系泊 |
| | SBN | | abbr. | Standard Book Number 标准书号 |
| | SBR | | abbr. | Styrene Butadiene Rubber, 一种橡胶 |
| | SC | | | =Shift (Control) Counter 移空(控制)计数器 |
| | SCA | | | =Science Clubs of America 美国科学俱乐部联合会 |
| | SCALO | | | =Scanning Local Oscillator扫描本机振荡器 |
| | SCAMP | | | =Single Channel Monopulse Processor单信道[路]单脉冲信息处理机 |
| | SCAN | | | =Self-Contained Automatic Navigation 自主式自动导航(系统) |
| | SCANDISK | | n. | [计]磁盘检查工具 |
| | SCANS | | | =Scheduling and Control by Automated Network Systems 网络系统自动程序控制 |
| | SCAP | | abbr. | Supreme Commander for the Allied Powers[史](驻日本)盟军最高统帅 |
| | SCAPA | | | =Society for Checking the Abuses of Public Advertizing 制止滥用广告协会[英] |
| | SCAR | | | =Scandinavian Council for Applied Research 斯堪的纳维亚应用研究委员会 |
| | SCAT | | | =Security Control of Air Traffic 空中交通安全管制 |
| | SCATT | | | =Scientific Communication and Technology Transfer 科学通信和技术传递 |
| | SCC | | | =Satellite Control Center 卫星控制中心 |
| | SCCA | | abbr. | Sports Car Club of America美国赛车俱乐部 |
| | SCD | | | =Solar Capture Device 太阳捕获装置 |
| | SCDC | | | =Source Code and Data Collection 源代码与数码的搜集 |
| | SCE | | abbr. | （英国的）苏格兰教育证书 |
| | SCEL | | | =Signal Corps Engineering Laboratories 通信兵工程实验所(美军) |
| | SCEP | | | =Study of Critical Environmental Problems紧急环境问题的研究 |
| | SCEPS | | | =Selfcontained Environmental Protective Suits 齐备的环境防护衣 |
| | SCF | | | =Satellite Control Facility 卫星操纵设备, 卫星管理处[美](USAF) |
| | SCFBR | | | =Steam-Cooled Fast-Breeder Reactor汽冷快中子增殖反应堆 |
| | SCFM | | | =Subcarrier Frequency Modulation 副载波调频 |
| | SCHO | | | =Standard Controlled Heterodyne Oscillator 标准型控制式外差振荡器 |
| | SCHWR | | | =Steam-Cooled Heavy Water Reactor 蒸汽冷却式重水反应堆 |
| | SCI | | | =Ship Controlled Intercept(Radar)舰控截击(雷达) |
| | SCIC | | | =Semiconductor Integrated Circuit半导体集成电路 |
| | SCIM | | | =Selective Catagories in Microfiche 选择性缩微胶片类型([美]NTIS) |
| | SCLC | | abbr. | Southern Christian Leadership Conference(美国) 南方基督教领袖会议 |
| | SCM | | abbr.；n. | abbr. [计] Single Chip Micyoco ,单片机；n. 供应链关系管理(Supply Chain Management) |
| | SCMR | | | =Surface Composition Mapping Radiometer 表面成分图象辐射仪 |
| | SCN | | | =Self-Contained Navigation 自主[独立]导航 |
| | SCNA | | | =Sudden Cosmic Noise Absorption 突然宇宙(射电)噪声吸收 |
| | SCO | | | SCO Unix系统 |
| | SCOMO | | | =Satellite Collection of Meteorological Observations 卫星收集气象观测(数据) |
| | SCOPE | | | =Scientific Committee on Problems of the Environment 环境问题科学委员会(ICSU) |