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位面 计 : 22 phrases in 11 subjects |
| Chemistry | 4 |
| Commerce | 1 |
| Construction | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 4 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 4 |
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