degradationn.降格;堕落;退化
degradation ceremony堕落仪式
Degradation parameter降解率参数
Degradation grassland草地退化
degradation of moduli模量退化
Degradation substance降解产物
degradation bacterium降解菌
degradation half life降解半衰期
degradation actuality退化现状
degradation of energy能的退降,能的递降,能量衰减
degradation phenomena退化现象