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| промежуточный рассев | |||
| улавливание загрязнений решётками со средним диаметром отверстий (10-25 мм) | |||
| среднее грохочение; средний рассев | |||
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medium screening : 3 phrases in 3 subjects |
| Geology | 1 |
| Mining | 1 |
| Nanotechnology | 1 |
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