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形 折叠 : 30 phrases in 11 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Exhibitions | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Oil / petroleum | 1 |
| Plastics | 3 |
| Project management | 2 |
| Space | 1 |
| Technology | 11 |
| Textile industry | 6 |
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