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четырёхпроводная система
| телефонной связи
| четырёхпроводная система | |
| tech. | four-wire system |
| телефонная связь | |
| tech. | oral communication; speech communication; telecom; telephone communication; voice communication; telephony |
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| four-wire system | |||
| четырёхпроводная система: 11 phrases in 6 subjects |
| Communications | 1 |
| Computer networks | 1 |
| Electronics | 2 |
| Technology | 3 |
| Telecommunications | 3 |
| Telephony | 1 |