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| 跟踪雷达 | |||
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track radar : 49 phrases in 9 subjects |
| Air defense | 13 |
| Aviation | 6 |
| Earth sciences | 1 |
| Electronics | 6 |
| General | 4 |
| Military | 1 |
| Space | 12 |
| Technology | 5 |
| United States | 1 |
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