查询词典 simultaneous equations

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

By applying theory of displacement mat rix the equations have to be salisfied by parameters of mechanism with a first o rdered osculation at three points of a given straight line tangential to curve o f connecting rod were derived, and at the same time enable the equations to sati sfy the condition of velocity's direction by way of se...

应用位移矩阵理论推导了连杆曲线与给定直线在三个点上一阶密切时机构参数应满足的方程，同时通过设定机构初始位置，使其能够满足速度方向条件。也给出了用该方法综合的几个机构实例和一个应用实例。

Several important nonlinear equations of mathematical physics such as φ4 equation, Klein-Gordon equation, the approximate equations of sine-Gordon equation and sinhGordon equation, Landau-Ginzburg-Higgs equation, Duffing equation, nonlinear telegraph equation are the special cases of the nonlinear wave equation presented in this paper.

几个有重要应用的非线性数学物理方程，如矿方程，Klein-Gordon方程，Sine-Gordon方程，及Sinh-Gordon方程的近似，Landau-Ginzburg-Higgs方程，Duffing方程，非线性电报方程等都可作为该方程的特殊情形得到相应的显式精确解，这里方法也可推广到n+1维空间情形。

In the numerical study, the governing equations of flow and heat transfer in 3 —D body—fitted curvilinear coordinate system being automaticly generated with TTM method were deduced by means of vector and tensor analysis. These equations were dliscreted with nonstaggered grids providing relative elimilating method for the pressure oscillation was domonstrated.

在数值分析中，借助于矢量理论和张量分析，导出了具有普遍意义的三维任意曲线坐标系下的流动传热控制方程，并利于TTM方法生成了计算域的贴体曲线坐标网格；在数值离散过程中，尝试了用非交错网格离散的方法并解决了压力场振荡的抑制问题；运用附面层理论，阐述了壁面函数法在三维任意曲线坐标系上的应用。

In terms of Navier-Stokes equations and LES model, the SIMPLEC algorithm with the body-fitted coordinate and tetrahedroid grid system is applied in the solution of the discretization governing equations.

本文基于N-S方程和大涡模拟模型，采用贴体坐标和四面体网格系统和SIMPLE算法，较准确地对混流式水轮机内部三维非稳定湍流流动及其尾水管内的旋涡压力脉动进行了数值模拟。

In terms of Navier-Stokes equations and LES model, the SIMPLEC algorithm with thebody-fitted coordinate and tetrahedroid grid system is applied in the solution of the discretization governing equations.

本文基于N-S方程和大涡模拟模型，采用贴体坐标和四面体网格系统和SIMPLE算法，较准确地对混流式水轮机内部三维非稳定湍流流动及其尾水管内的旋涡压力脉动进行了数值模拟。

Nonetheless, the theory of difference equations is a lot richer than the corresponding theory of differential equations.

尽管如此，差分方程理论要比相应的微分方程理论丰富得多。

Oscillation theory of ordinary differential equations in the theory of differential equations is an important branch, it has a profound background of the physical and mathematical model.

常微分方程振动性理论是微分方程理论中的一个十分重要的分支，它具有深刻的物理背景和数学模型。

The pages of Thomasina's book are filled with iterated equations or equations that feed solutions of one equation into the next.

网页Thomasina的书充满了迭代方程或方程，饲料解决方案的一个方程进入下一个。

These transfer equations were used to reestablish the entropy transfer equation for the electromagnetic fluid,and further to reconstitute the differential component equations for different forms of exergy and the differential equation for total exergy in the fluid by the definitions of thermal,pressure,chemical,kinetic,potential and electromagnetic forms of exergy.

通过定义热火用、压火用、化学火用、动能火用、势能火用、电磁火用，重新构建了不同形式火用传递的分量方程及其总火用传递方程。

That's what makes this mod unique.

这也正是这个MOD独特。

I now feel furious and want to do something.

现在我觉得非常气愤，想做点什么。