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        The basic nutritional requirements of heterotrophic (異養(yǎng)型的),microorganisms are an energy or carbon source,an available nitrogen source,inorganic elements,and water,for some microorganisms,growth factors (生長(zhǎng)因子) and oxygen are also needed.The elemental compo......（本文共 4344 字）     [閱讀本文] >>