The gray relation degree indicates that the series for adaptability of every mining method are surface mining, sublevel caving mining, block stop mining etc;
灰关联度计算表明，采矿方法适应性排序为：露天开采法、分段崩落法、阶段矿房法等；
The results show that satisfied result can be got while gray relation degree theory is used to analyze all kinds of factors" influence to the voids."
研究结果表明：灰关联分析法用于分析诸因素对空隙率的影响能获得较好的结果。
The results show that satisfied result can be got while gray relation degree theory is used to analyze all kinds of factors" influence to the voids."
研究结果表明：灰关联分析法用于分析诸因素对空隙率的影响能获得较好的结果。
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