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operations system | |||
operation system |
运营系统 : 42 phrases in 11 subjects |
Advertising | 1 |
Aviation | 2 |
Communications | 5 |
Economy | 1 |
Electronics | 20 |
Information technology | 3 |
Project management | 1 |
Rail transport | 2 |
Space | 2 |
Technology | 3 |
Telecommunications | 2 |