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| механическое обогащение (des minerais, руд) | |||
| механическое обогащение (заполнителя) | |||
| механическое обогащение | |||
| механическая подготовка | |||
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préparation mécanique : 3 phrases in 2 subjects |
| Forestry | 1 |
| Mining | 2 |
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