lump coal

基本解釋

It is a kind of feasible research means for optimization of blasting parameters for increasing lump coal rate.
從而為提高煤塊率的參數(shù)優(yōu)化提供了一種切實可行的研究方法。
It is the focus problem for anthracitic coal production enterprise to increase percentage of lump coal and reduce amount of lump coal with size smaller than lower size limit.
提高塊煤率、降低塊煤限下率是當(dāng)前無煙煤生產(chǎn)企業(yè)關(guān)注的焦點問題。
In order to understand the properties of impact toughness of coal with different impact speeds and the change of impact toughness of lump coal to joint directivity of lump coal.
為了研究不同沖擊速度條件下塊煤沖擊韌度的變化特征，以及塊煤節(jié)理方向性對塊煤沖擊韌度的變化特性。

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