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| 螺旋式分选机 | |||
| 螺旋分级机 | |||
| 螺旋式分离机 | |||
| 螺旋形分析器; 螺旋式分选机; 螺旋筛分机 | |||
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spiral classifier : 6 phrases in 2 subjects |
| Metallurgy | 1 |
| Technology | 5 |
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