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| 识别特 征: 16 phrases in 9 subjects |
| Air defense | 1 |
| Artificial intelligence | 3 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Logistics | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 3 |
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