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Because of the characteristic of paleosol's distribution of double-apices, the differences between high-order skewness and kurtosis are obvious. 偏態(tài)注重粒度分佈的尾部，峰態(tài)關(guān)注峰的寬窄，且由於古土壤呈明顯的雙峰分佈，因而高堦偏態(tài)和峰態(tài)差異顯著。