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| defense system | |||
| 国防系统: 109 phrases in 12 subjects |
| Air defense | 8 |
| Aviation | 27 |
| Desert science | 1 |
| Earth sciences | 4 |
| Electronics | 25 |
| General | 2 |
| Information technology | 1 |
| Multimedia | 1 |
| Nautical | 5 |
| Space | 23 |
| Technology | 1 |
| United States | 11 |
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