regressiveadj.退步的；退化的；递减的(税率)；回归的regressive successio后退演替regressive character退化性状(动)regressive sediments海退沉积物regressive analytsis回归分析regressive ecosystem退化生态系统regressive combustio减面燃烧regressive definitio回归定义regressive assimilate逆同化regressive combustion减面燃烧regressive metaplasia[医] 退行性转化