 |
| |||
| four-conductor line | |||
| four-wire circuit | |||
| four-wire line (передачи) | |||
| четырёхпроводная линия: 19 phrases in 9 subjects |
| Computer networks | 1 |
| Electronics | 4 |
| Information technology | 1 |
| Mass media | 4 |
| Military | 1 |
| Technology | 3 |
| Telecommunications | 3 |
| Telephony | 1 |
| Transport | 1 |