逼近的

Thus, we must recur to some prior models and high effective approximative method to solve complex modelling and computing.

我们必须借助于一些先验模型、高效的逼近算法才能解决复杂的建模与计算问题。

Furthermore,the optimal approximation bisymmetric solution pair to a given bisymmetric matrix pair in Frobenius norm can be obtained by finding the least norm bisymmetric solution pair of new matrix equation ,where .

另外，给定双对称矩阵对，通过求矩阵方程的双对称解对，得到它的最佳逼近双对称解对。

In addition, the unique optimal approximation solution $\\\\\\\\\\\\\\\\hat X$ to given matrix $X_0 $ in Frobenius norm can be derived by finding the least-norm generalized bisymmetric solution $\\\\\\\\\\\\\\\\widetilde X^\\\\\\\\\\\\\\\\ast$ of the new matrix equation $A\\\\\\\\\\\\\\\\widetilde X B=\\\\\\\\\\\\\\\\widetilde C$, here,$\\\\\\\\\\\\\\\\widetilde X=X-X_0$, and $\\\\\\\\\\\\\\\\widetilde C=C-AX_0B$.

另外，对于给定矩阵X_0的最佳逼近解$\\\\\\\\\\\\\\\\hat X$，可以通过求解新的矩阵方程$A\\\\\\\\\\\\\\\\widetilde X B=\\\\\\\\\\\\\\\\widetilde C$得到，其中$\\\\\\\\\\\\\\\\widetilde X=X-X_0$，$\\\\\\\\\\\\\\\\widetilde C=C-AX_0B$。

Furthermore, the optimal approximation centrosymmetric solution pair to a given centrosymmetric matrix pair in Frobenius norm can be obtained by finding the least norm centrosymmetric solution pair of new matrix equation ,where .

另外，给定中心对称矩阵对，通过求矩阵方程的中心对称解对，得到它的最佳逼近中心对称解对。

Then the way is also studied to introduce some phase mismatching in OPCPA to detune the nonlinear crystal length for most stable output.

首先介绍了模拟光参量啁啾脉冲放大过程的多种计算模型，在此基础上提出了三步走逐步逼近算法，以确定OPCPA过程中最稳输出时所需的非线性晶体长度。

In Chapter 1, we will briefly introduce Diophantine approximation and metric Diophantine approximation over the real number field and state some results which are important for our work.

在第二章，我们将介绍在正规Laurent级数体上的Diophantine逼近。第一节罗列了一些定义及我们即将使用的符号。

It is shown that such a model can be used to design a nonlinear controller by techniques of norm H(subscript ∞) with the goal of maintaining relative equibalance water level along the open-channel reach.

以节制闸紧急启闭造成的水位波动和渠道物理建模的不确定性为抑制目标，采用泰勒级数和基于泛函估计有限差分法对Saint-Venant方程进行逼近形成了有限维状态方程，在H范数意义下对模型进行求解。

According to this model, approximate harmonic map is easily and fleetly solved by using computer linear circuit analysis.

利用此模型，可由计算机分析线性电路的长处，既方便又快速地求出调和映射的近似逼近。

The paper gives a fractal images compression algorithm deduced using best polynomial approximation, and two domain blocks searching path (variable step and nonvariable step), and proposes domain blocks incremental evaluation so as to increase the efficient of images compression.

本文还给出了我们用多项式最佳逼近方法导出的分形图象压缩算法，以及两种定义域块搜索路径，并提出了定义域块的增量计算思想，以提高压缩效率。

Two orthographic views obtained are mapped on to a new coordinate system in two dimensions.

在二维空间，求出两相交三角形的交线段，其集合就是两曲面交线的逼近。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。