any of the bacteria in the soil that take part in the nitrogen cycle; they oxidize ammonium compounds into nitrites or oxidize nitrites into nitrates
nitrobacterium详细解释
ni.tro.bac.te.ri.um n.（名词）【复数】ni.tro.bac.te.ri.a[-tôr.ô-…] 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
