查询词典 first approximation

Accordingly pels tracing and function approximation are avoided ,and vectorization process is simplified effectively.At first ,every arithmetic of image transformation and image filter is researched and its disposal image is analyzed .

本文首先对图像变换和图像滤波的各种算法进行了研究，分析了各个算法的处理效果，根据实验试验结果提出应结合图像本身的特点选择合适的预处理方法，并运用小波变换对图像进行压缩变换和滤波处理。

In this paper, we survey the development of polynomial approximation of rational curves and state the knowledge of interval curves in the first chapter.

本论文中，第一章首先介绍了有理曲线曲面的多项式逼近研究工作的发展情况和区间曲线曲面一些相关知识。

In order to overcome this problem, in this paper, the surface electric current of the conducting sea surface and the first-order scattering from the conducting plate are obtained by employing Physic Optics method. The backscattering field of the time-dependant sea surface is calculated by using Kirchhoff Approximation. Meanwhile, taking the advantage of a newly developed technique that utilizes the reciprocity theorem, the difficulty in formulating the secondary scattered fields from the composite target is reduced. The dependences of the backscattered field on the parameters, such as the wind speed and the sizes of the plate are discussed.

为了克服这一问题，本文应用物理光学近似求解了导体海面表面电流及导体平板的一阶散射场，应用基尔霍夫近似给出了海面的后向散射场，同时借助互易性定理降低了求解平板和海面之间二次耦合散射场的难度，讨论了平板尺寸、风速等对后向复合散射场的影响。

First introduced the lattice-value information systems knowledge, and to partial order for the basis has been a new relationship: advantage, given the reduction and the core, the concept of simplifying the classification of features, it is also given on the approximation, and the approximate reduction of matrix determined theorem and the concept of identification, the final adoption of specific reduction of examples to illustrate this method is effective.

首先介绍了格值信息系统的相关知识，并以偏序关系为基础得到了一种新的关系：优势关系，给出了约简和核心，简化了概念的分类特征，也给出了上近似、下近似及约简的判定定理和辨识矩阵的概念，最后通过具体的例子说明这种约简方法是有效的。

At the first, it is proved that for an incompressible flow past through a flat plate the solution of the SRNS equations is regular at the point of separation and the SRNS equations are a precise approximation to the CNS equations.

首先，为看清SRNS方程在分离流动中的特点，对其在平板绕流的分离点及其邻域的数学特性进行了研究。

On the first subject, the phase approximation of image formation algorithms for UWB SAR operating on P band was discussed in detail. The methods to determine the consistent focusing swath width in Chirp Scaling algorithm using residual coupling phases and range spectrum characteristics were also proposed.

本论文以国防预研项目为背景，针对现有实测机载P波段UWB SAR数据成像处理中所面临的问题，围绕宽幅成像算法、运动补偿和图像干涉三个方面展开了深入研究，取得了有益的成果。

Making use of Tight-binding approximation, plotting isoenergic surface about S state electron of simple cubic lattice in first Brillouin zone in MATLAB soft.

利用紧束缚近似方法，在数学软件MATLAB中绘制简立方晶格S态电子在第一布里渊区的等能面。

Making use of Tight-binding approximation,plotting isoenergic sur face about S state electron of simple cubic lattice in first Brillouin zone in M ATLAB soft.

利用紧束缚近似方法，在数学软件MATLAB中绘制简立方晶格 S态电子在第一布里渊区的等能面。

Tang's first-order mean spherical approximation equation of state based on the theory of RDF is a totally theoretical EOS.

本文运用Tang基于FMSA开发的应用软件计算了LJ流体的径向分布函数、压缩因子、等温线以及汽液相共存相图等，并与分子模拟的结果相比较。

At first the definition of prediction values of system, network model, prediction model are given, then the stochastic approximation character of the system including simple system noise when identified by a network model using seriesparallel scheme is analyzed as well as the effect of noise on the model multi-step prediction is discussed.

首先对系统、网络模型、预报模型的各种预报值作了定义，然后针对只含简单系统噪声的系统讨论了在串-并联辨识方案下模型对系统一步预报的概率逼近特性，并分析了噪声对模型多步预报的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。