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