查询词典 implicit difference scheme

An ultra-wideband microwave imaging scheme with separated transmitter and receiver was investigated by using finite difference time domain method.

摘要介绍了一种基于半球模型的早期乳腺癌超宽带微波成像检测方案。

The generalized Douglas scheme for variable coefficients is applied to wide-angle multistep finite-difference beam propagation method.

交叉波导是集成光学中一种重要的器件单元，它的应用包括制作能量分配器、光开关[1] 、低损耗低串音的交叉光路网络等。

As we know,Newton's interpolation polynomial is based on divided differences which can be calculated recursively by the divided-difference scheme while Thiele's interpolating continued fractions are grared towards determining a rational function which can also be calculated recursively by so-called inverse differences.

大家都知道，牛顿的插值多项式是基于均差的，可以递归出均差，而Thiele插值连分式是一个有理插值，也可以递归地计算，即所谓的逆。

The numerical solution of the model is based on an energy-conservation scheme of finite difference.

模式的数值解满足一套能量守恒的有限差分格式。

Taking ADL Evaluation Scheme for Cerebral Palsied Children as main efficacy value,very marked statistic difference exists when two groups with or without Madopar were assessed on the third evaluation in our study,and it shows the effects of Madopar while its adverse events are mild ...

结果显示：以脑瘫儿童日常生活能力评价表作为疗效评价标准，用美多巴治疗组与不用美多巴治疗组在第3次评价时有极显著性的差异（P＜0.001）。

First, the paper proves the well-posedness of the encryption and decryption problems, which provides theoretical bases for experiments of encryption and decryption; Then presents a fast iterative algorithm, which is proposed based on the special sparse structure of the coefficient matrix of the two-dimensional C-N difference scheme, and successfully experiments on images encryption and decryption; At the end, the security of the methods of images encryption and decryption based on the two-dimensional Pseudo -parabolic Partial Differential Equation is experimented and discussed particularly.

首先证明了基于二维连续模型的加、解密问题是适定的，为加、解密实验提供了理论依据；然后根据模型的二维C-N格式系数矩阵的特殊稀疏结构，给出快速迭代求解算法，并成功地进行了图像加、解密的数值试验；最后对基于二维伪抛物型方程的图像加、解密方法的安全性进行了详细的试验讨论。

To overcome this problem derived from the difference of language, Shakespeare chose to follow the idiomatic rhyme scheme used by Philip Sidney in his Astrophel and Stella (published posthumously in 1591), where the rhymes are interlaced in two pairs of couplets to make the quatrain.

为了克服来自于语言不同的问题，莎士比亚选择按照菲利普锡德尼在他的诗《爱星者与星》（于1591年在他死后出版）中所使用的习语方式进行押韵，这种方式是通过两组对偶句的交错押韵来构成四行诗。

In this dissertation, the numerical method solving the model equation influid motion in some sense has solved some tough problems which traditionalmethods cannot, as in the case of capturing shockwave, enhancing resolution, andspeeding computation. In terms of capturing shockwave and enhancing resolution,this method has proved to be superior to difference method; in terms of speedingcomputation, superior to TVD scheme. Particularly, it is highly effective to solveodd singular solution problems.

本文研究的求解描述流体运动的若干模型方程的数值方法，在一定程度上解决了传统方法在某些方面的难点问题，如在捕捉激波、提高分辨率方面优于差分法，在计算速度方面优于TVD格式，特别是对处理有奇异解的问题很有效。

In the solution of the Difichlet boundary problem ofLaplace equations, we provide an effective method for determining the spectral radiusand the best slack variable of block basic iterative methods. At the same time, wepresent the spectral radius and the best slack variable of basic iterative methods from thenine-point difference scheme.

在解决Laplace方程Dirichlet边值问题上，文章为确定块基本迭代方法的谱半径和SOR方法最优松弛因子提供了一个有效的方法，并推导了九点差分格式下的块基本迭代方法的谱半径和SOR方法最优松弛因子。

In order to improve the precision of difference scheme, staggered grid was used.

为了提高差分格式的精度。采用了交错网格。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。