There were three times of sea-level fluctuation corresponding to the paleoclimate evolution, which had formed the sediments of alternative sea and river facies.

晚更新世以来的三次海平面升降变化造成了潍河下游地区海陆沉积环境交替，形成了巨厚的海陆交互相沉积层。

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Can solve te flood resistance problem of the river and lake with alrge fluctuation of water level.

可解决在水位涨落大的沿江，湖泊地区建泵站的电机防洪问题。

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