The red Cambridge vegan leather has a glossy, two-tone finish, while the black and oxblood vegan leather has a soft matte look and feel. Dr Martens also has a wide range of other leather … · 图3|分类数据 (group.csv)。 二、变差分解分析 (Variation partitioning analysis,VPA) 2.1 方法一：RDA及VPA分析 使用rda ()进行偏RDA分析，然后自行计算指定环境因子解释率以 …
