| English | eng-000 |
| central line | |
| 普通话 | cmn-000 | 中央通信线路 |
| 普通话 | cmn-000 | 中心线 |
| 普通话 | cmn-000 | 中线 |
| English | eng-000 | axis |
| English | eng-000 | center conductor |
| English | eng-000 | center line |
| English | eng-000 | centerline |
| English | eng-000 | inner conductor |
| English | eng-000 | mean line |
| English | eng-000 | median |
| English | eng-000 | median line |
| English | eng-000 | medium line |
| English | eng-000 | mesophragma |
| English | eng-000 | mid-line |
| English | eng-000 | middle line |
| English | eng-000 | middle wire |
| English | eng-000 | midline |
| English | eng-000 | neutral conductor |
| English | eng-000 | roll parting line |
| English | eng-000 | third wire |
| magyar | hun-000 | középvonal |
| русский | rus-000 | центральная линия |