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操作研究 : 16 phrases in 10 subjects |
| Aviation | 4 |
| Business | 1 |
| Ecology | 1 |
| Electronics | 3 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| French | 1 |
| Management | 2 |
| Shipbuilding | 1 |
| Telecommunications | 1 |
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