d值可以表征两组间（这里是男性和女性）某一参数的平均值有多大差别，并且同时考虑到这一参数在各组中的域值。
This indicates how far apart the averages of two groups (in this case men and women) are, taking into account the range of values that contribute to each average.
数学教育心理国际研讨组在1989年专门成立了研究小组，这个小组称为表征研究工作小组，主要研究数学表征的有关问题。
The international group for the psychology of mathematics education (PME), set up a study group, the group known as representation working group to mainly study mathematics representation in 1989.
随后讨论节理迹长、间距、开度、产状和组数等结构面几何特征对岩体渗透特性及表征单元体积的影响。
The factors influencing the permeability characteristic and REV size of rock masses such as trace length, space, aperture, inclination and the number of joint sets are discussed.
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