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operations and maintenance | |||
operation/maintenance | |||
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operation and maintenance |
运行和维护 : 27 phrases in 9 subjects |
Aviation | 5 |
Communications | 2 |
Computer networks | 1 |
Earth sciences | 1 |
Electronics | 9 |
Information technology | 3 |
Space | 3 |
Technology | 1 |
Telecommunications | 2 |