75069 returned light engine.
75069次列车返回。
75069 returned light engine.
75069次列车返回。
Based on single machine check test,small screening test,combustible withdraw rate calculation and flotator complete index calculation,prove that the flotation result is very well.
通过浮选检查试验、小筛试验、可燃体抽出率计算、浮选完善标计算,证明浮选浮选效果良好。
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