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维 修 时间: 101 phrase in 17 subjects |
Agriculture | 1 |
Air defense | 1 |
Automobiles | 4 |
Aviation | 26 |
Business | 7 |
Chemistry | 1 |
Earth sciences | 1 |
Economy | 1 |
Electronics | 7 |
Information technology | 4 |
Metallurgy | 8 |
Reliability | 7 |
Space | 14 |
Technology | 13 |
Telecommunications | 3 |
Transport | 1 |
Wind Energy | 2 |