The paper had a coal water mixture test with vitrain coal, bright coal and dull coal from Ningtiaota coal in Shenfu mining area.
选择神府
条塔煤中的镜煤、亮煤和暗煤进行了制水煤浆试验。
The paper had a coal water mixture test with vitrain coal, bright coal and dull coal from Ningtiaota coal in Shenfu mining area.
选择神府条塔煤中的镜煤、亮煤和暗煤进行了制水煤浆试验。
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