| English | eng-000 |
| double-line | |
| 普通话 | cmn-000 | 双线 |
| 普通话 | cmn-000 | 双轨 |
| English | eng-000 | bifilar |
| English | eng-000 | double-track |
| English | eng-000 | doublet |
| English | eng-000 | duplex line |
| English | eng-000 | two-track |
| English | eng-000 | two-wire |
| русский | rus-000 | двухпроходной |
| русский | rus-000 | двухпутный |