The optimal mathematical model of the double universal spindle must satisfy the constraints of strength, rigidity, vibration condition, stability and boundary condition.
双万向轴的优化数学模型必须满足强度、刚度、振动条件、稳定性及边界条件的约束。
In the mathematical model, the incremental iteration method is used to deal with such complicated nonlinear as boundary nonlinear, physical property nonlinear, transformation nonlinear etc.
在所采用的数学模型中，用增量叠代法处理边界条件非线性、物理参数非线性、相变潜热非线性等复杂问题。
According to the characteristic of die casting, the mathematical model suitable for numerical simulation of die casting dies was set up and the corresponding boundary conditions were determined.
针对压铸特点，建立了适合于数值模拟的压铸摸具温度场数学模型，确定了压铸过程的边界条件。
Based on aquifer characteristics, boundary condition and groundwater flow regime, the hydro geologic concept model and the three-dimensional groundwater flow simulation mathematical model was built.
并对含水介质结构、边界条件及地下水流态进行了研究，建立了水文地质概念模型，构建了三维地下水流数学模型。
The mathematical model can be described as a coupled system of nonlinear partial differential equations with moving boundary values.
其数学模型是一组多层对流扩散耦合系统的动边值问题。
The mathematical model for well testing is established for mixed boundary in rectangle reservoirs with vertical fractures.
针对油田特定注采方式下的垂直裂缝井，建立了矩形均质油藏混合边界垂直裂缝试井数学模型。
With corresponding boundary conditions, the mathematical model for semi-infinite wellbore is analyzed and solved to get the pressure distribution in horizontal interval.
通过相应的边界条件，对半无限长井筒的数学模型进行解析求解，得到水平段的压力分布，并对连续油管车所测的实际数据进行了分析。
The finite element method is used to numerically solve the initial and boundary value problem of the mathematical model.
采用有限元法求解数学模型的初值、边值问题。
Based on the mathematical model of the single pore electrode, the effective three-phase boundary length of the electrochemical reaction is defined and calculated.
在单孔电极模型基础上定义了电化学反应的有效三相分界线长度概念，并给出了对应的计算方法；
The mathematical model adopted in this article can simulate the thermal and mechanical boundary conditions in concrete blocks during placing using water cooling pipes.
本文采用的计算模型能体现混凝土浇筑块在受水管冷却时的热学和力学边界条件。
The infiltration process of the water on the surface is analysized under rainfall conditions, the two-dimensional mathematical model and its boundary conditions are presented.
分析了降雨条件下地表水入渗的过程，提出了降雨条件下非饱和渗流的二维数学模型及边界条件。
Drawing process of aluminum alloy wire has large plastic deformation, which mathematical model is complicated including geometric nonlinearity, boundary nonlinearity, material nonlinearity and so on.
铝合金导线拉拔成型塑性变形大，数学模型复杂，集几何非线性、边界非线性、材料非线性于一体。
In this paper, we proposed a mathematical model to describe random network which has the same marginal distribution and the boundary condition as BA model.
本文给出一种严格的数学模型描述随机网络，该模型与BA模型有相同的边际分布和边界条件。
The mathematical model and boundary conditions of soil temperature field in finite region is established through analysis of geometry model of underground heated pipeline.
通过分析埋地热油管道的几何特性建立了有限区域内非稳态热油管道土壤数学模型和边界条件。并使用PHOENICS软件对该数学模型进行了求解。
A mathematical model is proposed to describe random network which has the same marginal distribution and the boundary condition as BA model.
给出一种严格的数学模型描述随机网络，该模型与BA模型有相同的边际分布和边界条件。
Based on the boundary layer turbulence convective heat transfer theory in heat transfer, we establish the mathematical model of convective heat transfer on the urban waterproof surface.
以传热学边界层湍流对流换热理论为理论基础，利用实测数据建立城市不透水表面对流换热的数学模型。
Based on the boundary layer turbulence convective heat transfer theory in heat transfer, we establish the mathematical model of convective heat transfer on the urban waterproof surface.
以传热学边界层湍流对流换热理论为理论基础，利用实测数据建立城市不透水表面对流换热的数学模型。
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