在地图上神秘的方程序实际上只是简单的潮汐构成方程序。
The mysterious equation on the map is actually a simple tidal constituent equation.
基于河工模型的相似理论，从二维浅水方程推导出潮汐河口水流运动的相似条件。
Based on similarity theory of the physical model, the similarity condition of the current movement in the tidal estuary was deduced from the 2D shallow water equations.
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