分选系数 meaning in English

coefficient of sorting
gf
grading factor
separation coefficient
sorting coefficient

The linear relation assumes between the mean characteristic parameter , sorting coefficient , variation coefficient of pore structure by rectangular method and the fractal dimension by integrated linear regression , indicating that the fractal dimensions can be used to quantitatively describe the heterogeneity of reservoirs
用由矩法计算所得孔隙结构特征参数均值、分选系数及变异系数与用整体线形回归所得分形维数的线性关系说明，用分形维数来定量描述储集层非均质性是可行的。