Unsaturated soil water diffusivity is a necessarily basal parameter to study soil water movement laws and quantificationally analyze soil water movement with method of mathematical simulation.
非饱和土壤水分扩散率是研究土壤水分运动规律必不可少的基本参数之一。
The method of numerical simulation converts the question of conjugate surfaces into the problem of mathematical programming. The conjugate process can be directly described by numerical simulation.
数字仿真方法将共轭曲面问题归结为数学规划问题，可以应用数字化手段直接描述共轭过程。
The paper provides the mathematical model of numerical simulation for metal surface hardened by plasma-arc with finite element method.
给出了用有限元方法对金属材料等离子体弧金属表面强化处理过程数值模拟的数学模型。
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