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| радиостанция для двухсторонней связи | |||
| двусторонняя радиосвязь | |||
| двухсторонняя радиосвязь | |||
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双向无线电通信 : 6 phrases in 4 subjects |
| Aviation | 2 |
| General | 1 |
| Technology | 2 |
| Weapons of mass destruction | 1 |
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