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| 识别无线电发射机 | |||
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identification set : 13 phrases in 9 subjects |
| Air defense | 2 |
| Artificial intelligence | 2 |
| Aviation | 1 |
| Business | 1 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Information technology | 2 |
| Technology | 2 |
| Telecommunications | 1 |
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