To effectively and economically reduce the ash content of coal and raise the quality of coal products have become a commonly concerned problem.
如何经济而有效的降低煤炭灰分，提高煤炭产品的质量，已成为煤炭企业共同关心的问题。
The relationship between the raw coal ash content and the structural differentiation was studied by using statistics and the principles of dissipation structures.
运用统计方法和耗散结构原理，对原煤灰分产率和构造分异作用的关系进行研究。
The influence of coal characteristic indices such as caloricity ash content and water content on the coal handling system is discussed in the aspects of economy and reliability.
从经济性和可靠性角度分析探讨了煤的发热量、灰分、水分等衡量煤质的特性指标对输煤系统的影响。
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