颗粒度测量
jacoblin
第1楼2018/11/05
相当于相对D50的对称性，定义如下：a measure of the absolute deviation from the median.Here d(x,0.5) is the median size of the distribution (where x is replaced by v, s,l or n) and di and xi are respectively the mean diameter of, and result in, sizeclass i.
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