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| multifrequency signal | |||
| multiple frequency signal | |||
| multi-frequency dial signal (oleg.vigodsky); multi-frequency signal (oleg.vigodsky) | |||
| многочастотный сигнал: 13 phrases, 5 sujets |
| Appareils ménagers | 1 |
| Électronique | 1 |
| Militaire | 2 |
| Technologie | 3 |
| Télécommunications | 6 |