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| high-frequency section | |||
| HF band; high band; high frequency band | |||
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高频段 : 19 phrases in 11 subjects |
| Artificial intelligence | 1 |
| Aviation | 1 |
| Communications | 1 |
| General | 1 |
| Germany | 1 |
| Information technology | 1 |
| Shipbuilding | 2 |
| Space | 4 |
| Technology | 3 |
| Telecommunications | 3 |
| United States | 1 |
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