With the increasing of soil loss, the sorting coefficient for soil particle diameter of a layer decrease in different types of land utilization.

随着土壤流失程度的增大，流域不同土地利用状况下的A层土壤颗粒粒径分选系数降低。

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The rationality of the conversion coefficient (K) formula affects the analytical quality of uranium content of the ore from underground mining and the sorting quality.

换算系数(K)的公式是否合理，直接影响出窿矿石铀含量的分析质量和矿石的分选质量。

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Results of author's experiments show that this grade error tends to increase with the decrease of sampling volume and the increase of the boulder content as well as sorting coefficient of the placer.

笔者所做的砂金取样规格试验表明，砂金品位误差随着取样体积减小而增大。

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