查询词典 two-dimensional distribution

The GKS stability theorem for one-dimensional model of hyperbolic initial and boundary value problem, Trefethen's explanation and extension based on the concept of group velocity are generalized firstly. Another possible high-frequency instability mechanism in numerical realization of MTF is pointed out based on his explanation and extension, namely, coupling effect of outgoing harmonic wave along one direction and node motion in the other directions can reverse the energy propagation in multi-dimensional discrete grids.

本文概述了—维双曲型偏微分方程组初边值问题数值稳定性的GKS定理及Trefethen基于群速度概念对这一定理的解释和推广；并应用Trefethen的解释和推广指出了MTF在数值实现中可能出现的另一种高频失稳机制，即在多维离散网格中，沿某一空间方向的外行简谐波，由于与其他空间方向节点运动的耦合效应可以使能量传播方向反向。

With the 3-dimensional CAD software—MDT,the procedure of 3-dimensional graphic solution for opening value of cross rolling pass was.

节省了设计时间，减轻了设计强度，为管件斜轧工业生产提供了一种简便、精确、直观的三维图解计算方法。

Yaoxian, and the three-dimensional alphabet tendency more evident, fruits, die, shells, hemicycle among the highlights in a three-dimensional people before, so that one can not but praise the designer rich imagination, can not but feel deeply Yaoxian, soup decoration effects have reached a new level.

腰线和花片的立体化倾向更明显，水果、海星、贝壳、半圆形等均立体的凸现在人们的面前，使人们不能不赞叹设计师的丰富想象，不能不深切地感受到腰线、花片的装饰效果达到了新的水平。

Evaluation of three-dimensional surface roughness need to measure the three-dimensional coordinates of the points in the surface assessment region, the horizontal coordinates (x-coordinate), vertical coordinate (y-coordinate) and elevation data (z-coordinate).

三维表面粗糙度的评定需要测量出表面评定区域内各点的三维坐标，即横向坐标、纵向坐标和高度数据。

Methods MRCP were performed in 66 cases using a heavy T2 weighted MR hydrography technique. The images were post-processed by three dimensional maximum intensity projection and three dimensional surface shaded display.

采用重T2加权MR水成像技术对66例患者行MRCP检查，图像经三维最大信号强度投影及三维表面遮蔽显示技术后处理。

Methods MRCP were performed in 66 cases using a heavy T2 weighted MR hydrography technique, the images were post-processed by three dimensional maximum intensity projection and three dimensional surface shaded display Results The accuracy of MRCP for evaluating this disease was 100%, and for the cause of disease was 86.6%.

采用重T2加权MR水成像技术对66例患者行MRCP检查，图像经三维最大信号强度投影及三维表面遮蔽显示技术后处理。结果：水成像定位诊断率达100%，定位诊断率为86.6%，此技术可清楚显示胰胆管的形态，显示各种胆道疾病的异常改变，诊断正确性高。

Using the simplified COG model of FNN and fuzzy rules expressed by vectors this paper gives a new FNN based on hypersphere clustering where fuzzy sets and their membership functions have been generalized from one-dimensional to n-dimensional.

采用简化的重心模型和向量形式的模糊规则，将隶属函数由一维推广到高维，并定义了高维隶属函数，提出了基于超球聚类的模糊神经网络。

By extending the concepts of supremum and infimum in real space to the casein any finite-dimensional Euclidean space a weak supremum set and infimumset theory with respect to cones for the set in finite-dimensional Euclideanspace is developed,and several similar properties to the set in real space are ob-tained,with the concepts of this weak supremumset,w-D-conjugate maps and w-D-subdifferentials theory for the point-to-setmap are developed,and its several properties and its relationships with weakefficient solutions of the multiobjective programming are studied.

推广实空间中上、下确界的概念至任意有限维欧氏空间，建立了有限维欧氏空间中集合的锥弱上、下确界集理论，得到了与实空间中十分相似的性质。借助于这一理论，应用上、下确界的概念，给出了点集映象的w-D-共轭映象及w-D-次微分理论，并研究了它们的若干特性及其与弱有效解之间的关系，此外还讨论了弱鞍点问题。

In this dissertation, we discuss some problems related to infinite dimensional dynamical systems, and sketch the outline of the development of infinite dimensional dynamical systems in recent years.

中文摘要：这篇文章中，我们讨论了无穷维动力系统中和吸引子相关的一些问题，介绍了无穷维动力系统近几十年来的发展现状，而且具体考查了部分耗散反应扩散方程的解的长时间行为，在该方程的紧吸引子的存在性基础上，得到了该吸引子的正则性的一些结果。

The infinite dimensional inverse problem was approximated by a problem in the finite dimensional space by using approximation theory.

将该算法应用于复杂函数的自动演化建模，也取得了理想的效果，因此该算法具有良好的通用性。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。