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| 会议双向电话通信 | |||
| 会议电话 | |||
| 燃气涡轮动力设备 | |||
| Russian thesaurus | |||
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| ДГТС | |||
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двухсторонняя групповая телефонная связь : 4 phrases in 2 subjects |
| General | 3 |
| Technology | 1 |
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