结果表明，这类守恒格式具有高精度、无振荡性以及处理复杂流态过渡、自动捕俘间断和模拟陆地动边界的功能。
The results show that they are not only sufficiently accurate and nonoscillatory, but also capable of treating automatically fow transients, hydraulic jumps, and moving land boundaries.
研究了一类捕食者-食饵模型的平衡态系统在第三边界条件下正解的存在性。
The existence of positive solutions of the steady-state system is studied for a kind of predator-prey model under the third boundary conditions.
而且波浪是海岸地区一个非常重要的海洋水动力因素，波浪作用下底部边界层的流态、底摩阻系数、床面剪应力和泥沙起动的理论还不成熟。
But the theory about the flow regime of the wave boundary layer, the wave friction factor, the bed shear stress and the initiation of sediment motion has not developed very well.
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