（单词翻译:单击）
| 中文 | 英文 | 缩写 |
| 单（点）播 | unicast | |
| 单板 | board/card | |
| 单边测试 | one-sided test | |
| 单边带 | Single Side Band | SSB |
| 单边带调制 | single sideband modulation | |
| 单边带自适应差分 | single band-adaptive differential | |
| 单变量求解 | goal seeking | |
| 单层屏蔽双绞线 | one-layer shielded twisted pair | |
| 单刀双掷开关 | single-pole double throw switch | |
| 单导体 | uniconductor | |
| 单点故障 | single-point fault/failure | |
| 单个联合客体 | Single Association Object | SAO |
| 单个联系控制功能 | Single Association Control Function | SACF |
| 单工/单向/单向通信 | simplex | |
| 单工传输 | simplex transmission | |
| 单击/点击 | click | |
| 单机柜 | single cabinet | |
| 单控制点 | single point of control | |
| 单列直插式封装 | single in-line package | |
| 单路由广播 | Single-Routing Broadcast | SRB |
| 单模光纤 | single mode optical fiber | |
| 单模块/单组件 | unimodular | |
| 单片机 | single-chip computer | |
| 单频 | single frequency | |
| 单频网 | Single Frequency Network | SFN |
| 单跳传输 | single-hop transmission | |
| 单位间隔 | Unit Interval | UI |
| 单线对数字用户线 | Single-line Digital Subscriber Line | SDSL |
| 单向传输系统 | one-way transmission system | |
| 单向广播 | unidirectional broadcast | |
| 单向通道倒换环 | Unidirectional Path Switched Ring | UPSR |
| 单向自愈环 | unidirectional self-healing ring/loop | |
| 单星形结构 | single star structure | |
| 单选按钮 | radio button | |
| 单音频 | mono-tone frequency | |
| 单用户单元 | single subscriber unit | |
| 单元地线端子 | unit ground terminal | |
| 单源载波业务 | Unisource Carrier Service | UCS |
| 单字节扩展 | Single Byte Extension | SBE |
| 单纵模 | Single Longitudinal Mode | SLM |
| 单纵模激光器 | Single Longitudinal Mode Laser | SLML |
| 弹出 | pop up | |
| 弹出菜单/窗口 | pop-up menu/window | |
| 弹垫 | spring washer | |
| 弹回消息 | bounced message | |
| 弹性分组环 | resilient packet ring | |
| 弹性应力 | elasticity stress |
