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| operational information system | |||
| operating information'system | |||
| operating information system | |||
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业务信息系统 : 17 phrases in 6 subjects |
| Aviation | 1 |
| Computer networks | 3 |
| Electronics | 3 |
| Information technology | 8 |
| Name of organization | 1 |
| Space | 1 |
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