（单词翻译:单击）
| 中文 | 英文 | 缩写 |
| 侧板套件 | side board kit | |
| 侧门 | side door | |
| 侧装式旋钮 | side-mounted knob | |
| 测量/计次/计费/记录/登记 | metering | |
| 测量粒度 | measurement granularity | |
| 测量台 | measurement console | |
| 测量台 | test board/bed/bench | |
| 测内端 | Test Inside End | TIE |
| 测试板自检 | test-board self-test | |
| 测试电路 | test circuit | |
| 测试控制台 | test console | |
| 测试码 | test code | |
| 测外端 | Test Outside End | TOE |
| 策略传播 | policy propagation | |
| 层2管理连接 | Layer 2 Management Link | L2ML |
| 层2中继 | Layer 2 Relay | L2R |
| 层3移动管理 | Layer 3 Mobility Management | L3MM |
| 层次/体系 | hierarchy | |
| 层次结构/分级结构/分层结构 | hierarchical structure | |
| 层叠/级联（窗口） | cascade | |
| 层管理实体 | Layer Management Entity | LME |
| 叉车 | forklift | |
| 插拔（电路板） | insert and extract (circuit board) | |
| 插板 | plug-in card | |
| 插板固定器 | retainer of plugboard | |
| 插补分辨率 | interpolated resolution | |
| 插话 | break-in | |
| 插脚引线 | pinouts | |
| 插孔 | jack | |
| 插框 | plug-in shelf | |
| 插入卡/插入板/附加板 | add-in card | |
| 插入式端子 | plug-in terminal | |
| 插入衰减 | insert attenuation | |
| 插入损耗 | Insertion Loss | IL |
| 插线面板/接线板/接插板 | patch panel/board |
