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ni·tro·bac·te·ri·um AHD[nī'trō-băk-tîrʹē-əm] D.J.[ˌnaɪtrəʊbækˈtɪəriːəm]K.K.[ˌnaɪtrobækˈtɪriəm]n.（名词）【复数】 ni.tro.bac.te.ri.a[-tîrʹē-ə] - Any of various soil bacteria that take part in the nitrogen cycle, oxidizing ammonium compounds into nitrites or nitrites into nitrates.硝化细菌：一种参与氮环核，将氨的化合物氧化成亚硝酸盐或将亚硝酸盐氧化成硝酸盐的土壤细菌
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