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| metallic circuit; napa balanced pair | |||
| balanced pair (связи) | |||
| balanced pair; balanced pair line | |||
| balanced 2-wire line (oleg.vigodsky) | |||
| симметричная двухпроводная линия: 7 phrases in 5 subjects |
| Communications | 1 |
| Electrical engineering | 1 |
| Electronics | 3 |
| Makarov | 1 |
| Telecommunications | 1 |