degradationn.降格;堕落;退化
degradation particle粉碎的颗粒
degradation by light光降解作用
degradation microbes降解菌株
degradation interval降级间隔
degradation bacteria降解菌
degradation behavior老化过程
Degradation in water水解
degradation constant降解常数
degradation function降质函数
degradation reaction降解反应