The bacteria and their phosphorolysis characteristics of two eutrophic ponds in Dongli District and Xiqing District were studied.
对天津市东丽区和西青区两个富营养化池塘中的细菌及其解磷特性进行了研究。
To learn the epidemic law of virus hepatitis in Dongli District since 1990 to 2004 and provide scientific basis for the work of prevention.
目的了解和掌握天津市东丽区1990 ~ 2004年病毒性肝炎的流行规律，为制定防治对策提供科学依据。
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