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实验 雷达 : 33 phrases in 10 subjects |
| Air defense | 6 |
| Aviation | 6 |
| Earth sciences | 5 |
| Electronics | 6 |
| General | 3 |
| Missiles | 1 |
| Radio | 1 |
| Space | 2 |
| Technology | 1 |
| United States | 2 |
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