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| 优越化比例; 最适比率 | |||
| optimum ratio: 18 phrases in 8 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Securities | 1 |
| Space | 3 |
| Technology | 8 |
| Wind Energy | 2 |
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