钱塘江河口存在广阔的潮滩地。
大多数河口特别是钱塘江河口，往往存在宽广的潮滩地。
There are always wide tidal flats in most estuaries, especially in Qiantang Estuary.
制作了钱塘江河口模型，并模拟了涌潮的形成与传播过程。
The Qiantang estuary model was established, and the formation and propagation process of tidal bore was simulated.
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