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| 漂浮浓集法; 浮选浸出法; 菲勒本法 | |||
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floatation method : 20 phrases in 7 subjects |
| Chemistry | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Technology | 14 |
| Water resources | 1 |
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