该模型能同时对河床冲刷深度及粗化稳定级配进行计算。
The model can calculate scour depth of riverbed and armoring steady graduation simultaneously.
模型设计方法主要包括：如何合理选择模型河床质和床沙质，如何确定进口断面加沙量和放水时间等。
The design methods include how to select bed load and bed material within the suspended load and how to determine the feed of the model sand and the time of the experiment.
该文采用具有自由水面和河床切应力计算的三维数学模型分析了桥墩群对河道水流的影响。
A three-dimensional numerical model with free water surface and wall shear stress was used to analyze the water flow affected by piers.
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