In area , amorphous iron oxides represent 67 % of total iron oxides on average.

长江口潮滩沉积物中无定形铁占游离氧化铁67%以上.

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When alkalinity is lower , total iron in circulating water system and alkalinity is inverse relationship.

论述了循环水系统总铁来源,碱度对总铁的影响,现场监测结果与总铁的平衡及余氯对总铁的影响.

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