短語詞組短語chemical l degradation 化學損壞chemical -degradation method 化學降解法soil chemical property degradation 土壤化學退化chemical degradation of waste 廢物的化學降解chemical degradation agent 化學降解改進劑Chemical And Thermal Degradation 化學熱反應opto -chemical degradation 光化學降解electro -chemical degradation 電化學降解physical and chemical degradation 物理和化學損害 返回 chemical degradation