regressiveadj.退步的；退化的；递减的(税率)；回归的regressive definition回归定义regressive succession后退演替regressive prediction回归预测regressive parameters归心元素regressive derivative右导数regressive infantilism迟发幼稚型regressive coefficient回归系数regressive ripple mark逆行波痕regressive independent回归独立regressive necrophilia退行性恋尸癖