Based on the two-dimension adlittoral non-invariablenes flow control equation of lakes,a hydrodynamic model of lakes was built up.

从二维浅水非恒定流的程出发,建立了一个二维泊流体动力学模。

It was only a bayou in the ancient time and later on it became a lake for the tide had brought sand to the bayou.After numerous constructions, it became a semi-closed adlittoral lake.

古时为一海湾，因江潮挟带泥沙长期堆积形“”，又经过历代不断疏浚建设而为半封闭的浅水泊。