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要求功能 : 27 phrases in 10 subjects |
| Architecture | 2 |
| Aviation | 7 |
| Consulting | 1 |
| General | 1 |
| Information technology | 1 |
| Nautical | 5 |
| Reliability | 1 |
| Space | 4 |
| Technology | 3 |
| Telecommunications | 2 |
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