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| 信息系统开发; 信息系统研制 | |||
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information system development : 21 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 5 |
| Earth sciences | 1 |
| Electronics | 7 |
| Information technology | 2 |
| Name of organization | 1 |
| Space | 1 |
| Statistics | 1 |
| United Nations | 2 |
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