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telephone repeater | |||
telephonic repeater | |||
interphone amplifier (встроенный); relay amplifier; telephone repeater set |
телефонный усилитель : 9 phrases in 6 subjects |
Communications | 1 |
Electronics | 1 |
Makarov | 3 |
Rail transport | 1 |
Technology | 2 |
Telecommunications | 1 |