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| 数据管理信息系统 | |||
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data management information system : 24 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 4 |
| Business | 1 |
| Computers | 1 |
| Earth sciences | 5 |
| Electronics | 5 |
| Space | 3 |
| Technology | 1 |
| Telecommunications | 1 |
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