查询词典 difference equation

In the paper, we use the same idea to solve the variational equation,which equivalent to the Fredholm integral equation of the first kind with constraint.

这个积分方程的解只能确定到相差一个与边界的法向量成比例的向量，且在边界上的积分必须为零。

The direct displacement problem can be changed into solving a polynomial equation called the equivalent polynomial equation.

研究表明其正解问题最后可转化为一个高次多项式方程求解问题，称此方程为正解的等价多项式方程。

This paper proposes an equivalent second order elastic wave equation to solve the problem of being unable to completely separate the coupled P and S wave by full elastic wave equation.

给出了一种等价的二阶弹性波动方程，以解决弹性波场中完全弹性波动方程不能完全分离耦合的纵、横波波场问题。

In this paper,results of Markov chain are used under the circumstances of the automaton model which belongs to logical level of Discrete Event System to analyze the steady states and transient states of the Markov model of DES,respectively based on four conditions of discrete-time parameter and continuous-time parameter.A simpler decision rule of system ergodic property which applies both to the conditions of discrete-time parameter and continuous-time parameter is presented through an example.The transient states of DES which under the condition of continuous-time parameter are analyzed and computed based on Kolmogorov backward equation or forward equation.

利用马尔科夫链的结果，在离散事件系统逻辑层次的自动机模型基础上，对DES的Markov模型的稳态和暂态特性，分别从时间参数连续和离散的情况下，分四个情况进行了分析，通过实例对系统遍历性提出了一条更简单的且在连续和离散时间参数情况下都通用的判定规则，并利用Kolmogorov向后或向前方程，对连续时间参数DES的暂态特性进行了分析和计算。

The paper first generalizes basic substance and basic equation layout of SINS. The important thing is error equation.

本文首先简要地分析了惯导系统的基本工作原理，给出了惯导系统的基本方程，重点分析了惯导系统的误差方程。

According to this, a new expression for rotation vector algorithm is deduced. At the same time, the error estimation equation is given. The error estimation equation proves that the new algorithm has better performance in theory.

在设计新的捷联姿态算法的同时本论文推导了其在标准测试输入下的理论误差表达式，从理论上证明了新的算法具有较小的姿态误差。

The attitude error equation of ESGM is a linearized equation around the normal state of the gyro attitude.

静电陀螺的姿态误差方程，是陀螺姿态角方程围绕标称状态的线性化方程。

Firstly, the paper puts forward the basic equation, and then establishes error equation. Then in light to the difficulties in rectifying and checking, put forward a useful rectification and check method.

首先给出了基本关系式，列立误差方程，然后针对该方法纠正影像存在的困难，给出了实用的检查精度和纠正的方法。

On the base of INS, the method of initial alignment is introduced. And the state equation and observation equation are proposed. Using velocity error as exterior value of observation, We achieve the initial alignment.

在实现INS的基础上，研究INS和GPS组合的初始对准方法，建立组合导航系统的状态方程及速度观测方程，应用卡尔曼滤波器实现了INS／GPS的组合对准。

Firstly,the differential equation with parameters is given,at the same time,in order to let the truncation error of differential equation reach O(Δt~2+Δx~4) as high as possible,the method of undetermined coefficent is used to appropriately select the expression of these parameters.Secondly,the stability condition of the scheme derived is given by using the Fourier method of stability analysi...

首先给出了含参变量的差分方程，并用待定系数法适当地选取了这些参数的表示式，以使差分方程的截断误差阶尽可能高地达到了O(Δt2+Δx4)；其次用稳定性分析的Fourier方法给出了所得格式的稳定性条件；然后给出了确定差分格式中参数的两种方法，得到了一个稳定性条件为r/3的分支稳定的高精度显式差分格式；最后给出了数值例子，数值结果表明了本文格式较现有同类格式的优越性和理论分析的正确性。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。