parabolic approximation meaning in Chinese

抛物线逼近法
抛物线近似

Abstract : a numerical model for wave propagation in water of varying topography and current is proposed , and time - dependent wave mild - slope equation with a dissipation term and corresponding equivalent governing equations are presented . two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed . examples of numerical simulation for wave transformation in large estuarine water areas are provided
文摘:提出了水深与流场缓变水域波浪传播数学模型水流中依赖时间变量并考虑能耗的波浪“缓坡方程”及其等价的控制方程组，分析比较了无水流情况此理论模型与其相应的两种抛物型近似的差别，提供了长江口波浪变形数值模拟计算工程实例.实例表明，该模型能适应河口三角洲大范围水域波浪传播数值计算