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煤化程度

网络degree of coalification; coal rank

煤化程度

煤化程度

煤化程度

degree of coalification

矿业工程专业词汇D ... degree of acccuracy 精密度 degree of coalification 煤化程度 degree of crushing 破碎程度 ...

coal rank

不同煤化程度煤,co... ... ) different ranks of coal 不同变质程度煤 ) coal rank 煤化程度 ) degree of coalification 煤化程度 ...

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The relationship between density and coal rank obtained from the above two methods is alike , and appears concave up curves .

结果发现，两种测定结果随煤化程度的变化关系相一致，都呈一凹面向上的曲线。

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Experimental investigation in the grinding behavior and the comminuting character of coals of different rank

不同煤化程度煤的可磨性指数变化和破碎特性

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when the stress (strain) is the same , the higher the coalification degree , the less the permeability coefficient ;

当外加应力相同时，煤化程度越高，渗透系数越小；

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