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| 有源探测 | |||
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active detection : 28 phrases in 9 subjects |
| Air defense | 6 |
| Aviation | 2 |
| Earth sciences | 3 |
| Electronics | 5 |
| General | 1 |
| Information technology | 1 |
| Nursing | 1 |
| Space | 6 |
| Technology | 3 |
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