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золошлаковые отходы | bottom ash (Fly ash is one of two types of ash that jointly are known as coal ash; the other, bottom ash, is removed from the bottom of coal furnaces (wiki) Alexander Demidov) |
золошлаковые отходы | bottom ash (Fly ash is one of two types of ash that jointly are known as coal ash; the other, bottom ash, is removed from the bottom of coal furnaces (wiki) – АД) |