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| 电话联络系统 | |||
| 电话网系统 (СТС) | |||
| система телефонной связи: 14 phrases in 6 subjects |
| Astronautics | 1 |
| Business | 2 |
| Electronics | 1 |
| General | 7 |
| Technology | 1 |
| Telecommunications | 2 |
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