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| communication zone | |||
| communication area | |||
| 通信区域: 34 phrases in 10 subjects |
| Advertising | 1 |
| Air defense | 7 |
| Aviation | 2 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 8 |
| Space | 9 |
| Technology | 1 |
| Telecommunications | 1 |
| United States | 3 |
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