为了避免传统的权值确定方法所带来的主观性影响，将粗糙集理论引入可拓权重系数的求解过程中，使权系数问题转化为属性重要度评价问题。

To avoid the excessive subjectivity influenced by the conventional determination methods of weight factor, the rough set was introduced to the solution of the weight factor in the extenics evaluation.

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岩体的可灌性不仅取决于受灌裂隙的初始开度，还与在灌浆压力作用下裂隙的弹性扩张值有关。

The groutability of jointed rock should be increased by the grouting pressure because of the elastic expansion of grouted fractures.

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也就是说粗研时增大研磨压力可减小工件已加工表面粗糙度值。

It means that in rough lapping the value of machined surface roughness can be reduced with lapping pressure increasing.

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