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| data constant | |||
| 数据 常 数: 34 phrases in 11 subjects |
| Aviation | 2 |
| Electronics | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Information technology | 1 |
| Oil / petroleum | 2 |
| Project management | 8 |
| Space | 1 |
| Technology | 10 |
| Telecommunications | 2 |
| United Nations | 1 |
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