未筛分的煤
At present, our dense medium coal preparation technique mostly adopts preparation of non-desliming and unsized raw coal, equipments keep developing to large-scale.
目前,我国的重介选煤工艺大多采取不分级入选和不脱泥入选,设备趋向大型化。
纳米英语 · 双语娱乐资讯
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