1、

Comparison Principle for Viscosity Solutions of Dirichlet Problems of Nonlinear Second-order of Equation

一类二阶非线性方程Dirichlet问题粘性解的比较原理

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2、

Theory of stability of the differential equation was divided one-order differential equations of stationary point and stability and the second order differential equations of stationary point and stability, respectively.

微分方程稳定性理论又分为一阶微分方程的平衡点及稳定性,以及二阶微分方程的平衡点及稳定性。

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3、

In order to study the thermodynamic properties of chain molecules and their mixtures, an equation of state for homonuclear square well chain molecules is formulated by applying thermodynamic perturbation theory of Wertheim, on the basis of the equation of state for hard sphere chain fluids.

为研究链状分子物质(如烷烃等)及其混合物的热力学性质,应用Wertheim的热力学微扰理论,在链状硬球流体状态方程的基础上,发展得到了链状方阱流体的状态方程。

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4、

An express describing the entry pressure variation for the sample flow in conical dies was presented by using the constitutive equation of the second-order fluid and a tensor analysis method.

采用二阶流体本构关系和张量分析方法,导出了预测聚合物熔体在锥形口型流动中压力变化的方程式。

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5、

It is discussed the Lax pair of higher order dispersive water waves equation.

讨论了高阶色散水波方程的Lax对。

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6、

In this paper, considering stochastic forcing action in land-air system, the second order stochastic fluctuation climate model of land-air interaction is derived by using the thermodynamic equilibrium equation.

本文从热量平衡方程出发,考虑陆、气系统随机外力的作用导出了一个二次随机振动的陆、气系统相互作用的气候模型。

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7、

Existence of the solutions of terminal value problems for first order differential equation on infinite interval in Banach spaces

无穷区间上Banach空间常微分方程终值问题解的存在性

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8、

Thus in this article we will try to connect the second law of thermodynamics to the forecasting model, and try to add a restrictive condition to the thermodynamical equation in the model in order to improve the forecasting equation in some extent.

有鉴于此,本文根据热力学第二定律的思想尝试着给数值预报模式中的热力学方程施加一个约束条件,并在一定程度上对该预报方程加以改进。

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9、

In order to widen the scope of application of the equation, a thermodynamical enthalpy potential equation of the LHSS equation was derived according to the thermodynamical relation of universality of the enthalpy, and it has been used for calculating the process of adiabatic throttle.

为拓宽该方程的适用范围,文章从热焓的普适性热动力学关系出发,推导了该方程的热力学焓差方程式,并把它应用于绝热节流计算过程。

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10、

In order to solve the problem on the reliability calculation of dependent and non-normal stochastic vector in regard to non-linear equation of limit state. Method of second moment matrix ( Sc-M method) is presented.

为了解决非独立非正态随机向量关于非线性极限状态方程的结构可靠度计算问题,本文提出了二阶矩矩阵方法(简记为S c&M法)。

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11、

The results indicated that rate of fluoride removal with the kinetics equation of third order reaction in precipitation reaction.

除氟反应中,氟浓度衰减速率符合三级动力学方程。

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12、

Correction of third-order geometrical aberration equation in combined fields and aberration coefficients

电磁复合场三级几何像差方程的修正与像差系数

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13、

Positive Solutions of Three Point Boundary Value Problem for Third Order Differential Equation with p-Laplacian Operator

具有p-Laplacian算子的三阶微分方程三点边值问题的正解

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14、

This paper infer a series of recursive equation based on lease square estimation in order to reduce computing amount, include recurrence equation of regression coefficient, total dispersion square sum, residual square sum, regression square sum etc.

为了减少计算量,本文推导了基于最小二乘估计的一系列递推公式,包括回归系数、总离差平方和、残差平方和、回归平方和等的递推公式。

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15、

Starting from the differential equation of the first order, the definition of the first order circuit and its time constant are discussed.

从一阶微分方程入手,对若干典型的由多个电容和电感构成的电路进行分析,总结出一阶电路的界定方法及其时间常量的求法原则。

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16、

From the scale analysis it is found that on the average in the equation of motion the term of the time derivative is one order of magnitude smaller than the main terms in the meso-and small-scale motion.

由尺度分析可以发现:在一般中小尺度运动方程中,时间导数项较其中的各主要项小一个量极。

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18、

For two-dimensional Navier-Stokes equation, the second order implicit legendre approximation with high-accuracy was established. This approximation has two order accuracy in time direction, and spectral accuracy in space direction, and keeps the conservation of the dispersed energy.

针对二维Navier-Stokes方程建立了高精度的二阶隐的Legendre谱格式,该格式在时间方向具有二阶精度,在空间方向具有谱精度,且保持了离散能量的守恒性。

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19、

The three order Lagrange equation with the time rate of change of generalized force is a appropriate supplement to Lagrange equation with generalized force.

以广义力变率表述的三阶Lagrange方程是对以广义力表述的二阶Lagrange方程的恰当补充。

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20、

In order to improve the dynamic and transient performances of an asynchronized turbogenerator ( ASTG), excitation control equation of it in the dynamic synchronous reference frame is presented.

为了进一步改善异步化汽轮发电机的动态和暂态性能,采用一种新的控制方法:在动态同步轴系下建立异步化汽轮发电机的励磁控制方程。

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