where, m i = mass of the specimen before wear (g). m f = mass of the specimen after wear (g). ρ = density of the composite (g/mm 3). d s = sliding distance (m). L n = normal load (kg). 2.3.1 Design of ...

根据ki值的大小判断最优水平，得到各因素对cp含量的最优组合为a1b2c2d2。同理，对单宁含量影响因素大小排序为:菌种组合(b)、发酵时间(d)、桑叶与麸皮质量比(a)、接种量(c)，得到各因素对单宁含量的最优组合为a1b2c2d1。