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| ground environment (用于防空目的) | |||
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电子环境 : 39 phrases in 10 subjects |
| Air defense | 3 |
| Aviation | 8 |
| Earth sciences | 2 |
| Electronics | 10 |
| Geology | 1 |
| Information technology | 1 |
| Librarianship | 1 |
| Polymers | 2 |
| Space | 10 |
| Telecommunications | 1 |
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