Electroplating sludge containing high concentration of heavy metals such as Cr,Cd,Ni and Zn is a typical kind of hazardous wastes.是什么意思_Electroplating sludge containing high concentration of heavy metals such as Cr,Cd,Ni and Zn is a typical kind of hazardous wastes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句