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边 频带 : 38 phrases in 10 subjects |
| Air defense | 6 |
| Aviation | 3 |
| Business | 1 |
| Communications | 3 |
| Electronics | 9 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 8 |
| Telecommunications | 3 |
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