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| 需求审查 | |||
| requirements inspection: 22 phrases in 10 subjects |
| Aviation | 9 |
| China | 1 |
| Economy | 1 |
| Electronics | 1 |
| Management | 1 |
| Quality control and standards | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 4 |
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