某研究小组查阅了得知厦门海域的主要污染物是化学需氧量cod磷氮油类铅和汞等其中cod是指一定量海水与高锰酸钾或k2cr2o7�生 Template




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tomski某研究小组查阅了得知厦门海域的主要污染物是化学需氧量cod磷氮油类铅和汞等其中cod是指一定量海水与高锰酸钾或k2cr2o7�生 coloring