查询词典 virtual memory

In this thesis, the virtual boundary integral equation is based on double layer potential with the virtual density to be determined on virtual boundary. Since this integral equation related to double layer potential only involves the computation of the normal derivative and second normal derivative of fundamental solution, the exponential integral function is not involved in it, so numerical computation for the exponential integral function is avoid.

本文则基于双层位势，引入虚拟矩密度函数来建立虚边界积分方程，并首先对时间变量进行解析积分，在虚、实边界上采用常单元和等额配点离散，该方程只涉及含基本解的法向导数及其二阶法向导数项的计算，对时间变量进行解析积分后，不会出现对指数积分函数的空间变量的积分计算。

Make that folder a Virtual Drive, then install the Virtual CD from the Virtual Drive letter.

作出这样的文件夹虚拟驱动器，然后安装虚拟CD从虚拟驱动器的信。

DVE (Distributed Virtual Environment) is a kind of virtual reality system that simultaneously runs on computers connected by network. It allows distributed users to interact real-time with each other sharing a virtual world. DVE has effulgent application future in numerous domains such as military affairs, cooperative work, network games, etc.

分布式虚拟环境(Distributed Virtual Environment，DVE)是在一组以网络互联的计算机上同时运行的VR系统，使分布在不同地理位置的用户可以在一个具有高度真实感的虚拟世界里实时交互。

Based on the concepts of complex product, standard operation, virtual operation, no-wait and the expansion processing tree defined in this paper, the standard operations are processed by allied critical path method and best fit scheduling method, and the virtual operations are processed respectively on corresponding machine with movement and exchange algorithm in order to translate scheduling problem with no-wait operations into the general scheduling problem with virtual operations.

该方法在提出复杂产品、标准工序、虚拟工序、零等待和扩展加工工艺树的概念基础上，对扩展加工工艺树中的标准工序采用拟关键路径法和最佳适应调度的车间调度算法进行调度，对虚拟工序采用移动交换算法在相应设备上分离调度，将存在零等待约束的调度问题转化为存在虚拟工序的无零等待约束的调度问题。

Aimed at the needs of virtualized relationship in virtual environment, we introduce non-photorealistic rendering into virtual reality and presented a novel algorithm for virtualized relationship generation in image based virtual environment based on line integral convolution.

针对基于图像的虚拟场景虚化关联的需要，将非真实感绘制技术引入虚拟场景中，提出了一种基于线积分卷积的场景虚化关联生成方法。

By analyzing several currently-used visual displaying schemes for cranes simulation training, a display concept based on enhanced virtuality is proposed and some key issues in it are discussed. Manipulation based human-computer interaction technology is studied and two typical virtual controller are realized by associating the time or the location parameter of modeling with its movement parameters. A implement method of physical controller is presented based on virtual keyboard mapping technology and a compact and flexible control box prototype is obtained. Using it, users can operate the virtual crane conveniently.

分析了目前起重机模拟培训常用的几种视景显示方案，提出了一种基于增强现实的显示概念，并对其中若干问题的实现方法进行了探讨；研究了基于操纵的人机交互技术，通过时间或造型位置与起重机运动参数之间建立的联系，实现了两种典型的虚拟控制器；提出了一种基于虚拟键盘映射技术的物理控制器解决方案，设计了一个小巧、灵活的控制盒原型，可以方便地操作虚拟起重机并实现有关运动。

The virtual oceanarium and the Imperial Palace based on web are representative, namely, only virtual reality as tourism attractions product and another integrating virtual reality technology and internet technology.

文章最后选取虚拟水族馆和基于网络的虚拟故宫作为研究案例，代表纯粹将虚拟现实系统作为产品的新型景点及将虚拟现实技术与互联网技术结合起来的新型景点这两种类型，以便对本论题有个更深的理解。

Virtual oscillograph is one kind of virtual instrument, This text has recommended the whole course of the developing of the virtual instrument.

虚拟示波器是虚拟仪器的一种，本文介绍了开发虚拟仪器的全过程。

The paper also gives an analysis to a champion enterprise in constructing a virtual enterprise, including its function, conditions, and principalship arrangement. Then, the paper discusses the classification of different partner enterprises, and adopt the risk matrix to evaluate the choosing process of partner enterprises. After deciding all member enterprises, the paper puts an emphasis on the construction process and pattern of virtual enterprises. Finally, the paper conducts a detailed study on the integration of core competence, the motivation of virtual enterprises, the distribution of control power and cross-cultural management.

在此基础上，先从盟主企业角度，阐述了在组建虚拟企业过程中，盟主企业担当角色，应有的职能、盟主企业必备的条件，及委托权安排；然后讨论了伙伴企业的分类，提出了伙伴企业的选择流程，应用风险矩阵评估了伙伴企业的选择过程；在确定好各个成员企业后，着重分析了虚拟企业的构建流程、构建模式；具体研究虚拟企业核心能力整合、虚拟企业激励、控制权分配、跨文化管理。

On the basis of Earth surface space using reference ellipsoid as height basis, map space using Gauss-Kruger projection plane as height basis, a viewpoint is proposed that map projection actually establishes corresponding relationship between the height bases of two different spaces above. From the viewpoint of projection and visible representation, the relationships among earth surface space, RS imagery space and map space are analyzed; the differences among different representations of earth surface space are identified theoretically; virtual reality is applied to the representation of land surface space, and a prototype of real 3D virtual reality system based on spatial information is developed. By means of digital simulation, virtual reality representation of land surface space in visual image space is realized.

在以参考椭球面为高程基准面表征地表空间、以高斯-克吕格地图平面为高程基准面表征地图空间的思想基础上，提出了地图投影实质上是建立两个空间的高程基准面之间关系的观点；从投影和可视表达的角度，分析了地表空间、遥感图像空间、地图空间之间的关系，从理论上区分了对地表空间的不同表达方式之间存在的差别；将虚拟现实技术应用于地表空间的表达，研制了空间信息三维虚拟现实系统原型，利用数字模拟技术在视像空间实现了对地表空间的真三维虚拟现实表达。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。