边界几何形状 meaning in Chinese

boundary geometry

In practical projects , the boundary shape irregularity of the lake , reservoir , river and estuary area and the non - linear character of hydrodynamic equation make it difficult to get the theoretical solution of the equation , so the numerical solution has to be the only a choice
由于实际工程中湖泊、水库、河流、河口区域边界几何形状的不规则，以及水动力学方程的非线性性质，使得理论分析解难以作出，只能求助于数值解。