查询词典 virtual focus

Classroom Deployment 4.1 Equipment In order to use the world to deliver a lecture the following items of equipment are required: Desktop/Laptop positioned at the front of the classroom Data projector/LCD Panel/Plasma Panel connected to the above Desktop/Laptop (to provide lecturer with view of 'virtual students') 50 Plasma Panel (to provide lecturer with view of 'virtual students') connected to the above Speakers ( to enable lecturer and students in physical classroom to hear 'virtual students' ) Microphone ( to enable 'virtual students' to hear lecturer and students in physical classroom) Axis 212 PTZ Network Camera ( to provide live video of lecture in virtual classroom) 4.2 Layout The equipment in the classroom should be positioned as shown by Fig.

4课堂部署 4.1设备为了利用世界各地发表演讲下列项目所需的设备：台式电脑/笔记型电脑定位在前面的课堂数据投影机/ LCD屏/等离子面板连接到上述台式电脑/笔记型电脑（提供讲师与鉴于'虚拟学生） 50 等离子面板（与提供讲师认为'虚拟学生的）连接到上述发言者（以使教师和学生在体育课堂上听到'虚拟学生）麦克风（使'虚拟学生听到教师和学生在体育课堂）轴212云台网络摄像机（提供视频直播的演讲中虚拟教室） 4.2布局该设备在课堂上应定位为所表现出图。

This article take the personality learning to combine with the virtual learning community,attempt to study the virtual learning community which is a new thing ideal condition that this new things to offers ideal fictitiously for the middle school student's personality learning,further more,this article put forward a strategy about structuring a virtual learning community which based on the personality learning for middle school student,at last,the article analyze the virtual learning community about the basic education founded by The Capital Normal University,it has a strong effective on the field virtual learning community.

本文将个性化学习与虚拟学习社区相结合，试图通过探索虚拟学习社区这一新生事物为中学生的个性化学习提供的理想条件，进而提出关于构建一个基于个性化学习的中学生虚拟学习社区的有效设计策略，最后深入分析当前比较有影响的首都师范大学关于基础教育方面的虚拟学习社区，提出其中的优点和不足。

To solve this problem, based on the concept of graph theory we give a few models and arithmetic designs of virtual backbone in the environment of different application, and propose the corresponding routing mechanism with these virtual backbones. The major achievements are outlined as follows:The state of host's power or the time of host's online plays an important role in keeping stability of a virtual backbone. With a view to this feature, the paper introduces a simple and efficient heuristic algorithm for calculating the virtual backbone by seeking a minimum connected dominating set with maximal weight. The maximality of the weight-based choice of backbone nodes guarantees that the most suitable nodes have been chosen for the role of backbone nodes so that they can properly coordinate all the other nodes and keep stability of the virtual backbone in the network.

为了解决这个问题，本文利用网络图论中的一些理论，在不同的应用环境下给出几种虚拟骨干网的模型、构建及基于稳定性和节能的算法设计，并针对这些骨干网提出相应的分层路由机制，主要研究内容和贡献如下：考虑到主机的功率大小和在线时间长短对虚拟骨干中心的相对稳固性的影响，提出用基于极大权的最小连通支配集模拟虚拟骨干网；并给出其数学模型和相应的启发式算法，确保了性能强的主机担任骨干节点；通过优化规则确保骨干网的极小性，有效地减小了控制分组转发开销；最后进行了仿真验证。

It has carried out a physical experiment building and a virtual laboratory of electromagnetic induction based on VRML, using 3D MAX and VRML to make the three dimensional virtual test equipment, and produces the strategy which could optimize the VRML document, unify VRML and script language JavaScript to realize the object alternately operation in the three dimensional scene ; Using the embed element to insert the virtual experimental file to the HTML documents and realizes the network issue of virtual experimental system, which enables the studier to carry on the browsing study through Internet. And finally this thesis gives an introduction of the test appraisal situation of this virtual experiment.

具体是基于VRML实现了一栋物理实验大楼及一个电磁感应虚拟实验室，利用3D MAX、VRML进行三维虚拟实验设备的构建，并给出了优化VRML文件的策略，结合VRML和脚本语言JavaScript实现三维场景中模型对象的交互操作，使用embed元素将虚拟实验文件嵌入到HTML文档中实现虚拟实验系统的网络发布，使学习者能通过Internet进行浏览学习，最后介绍了该虚拟实验系统的试用评价情况。

Its software development tool are very important to the applications of virtual reality technology because of the rapid development of network technology Being aimed of the shortcoming that the development for the distributed parallelism of simulation computing unit is not enough and formal in current distributed virtual environment systems, we study the modeling language of virtual environment and the system architecture of distributed virtual environment in a new view point, build a complete extensible theory framework novelly for the research of virtual environment technology.

本文针对当前分布式虚拟环境系统对仿真计算单元的分布并行性开发不够充分和规范的缺点，从一个全新的角度来研究虚拟环境的建模语言及其分布式虚拟环境的系统结构，开创性地为虚拟环境技术的研究建立了一个全面可扩展的理论框架。

Firstly, virtual water contents were calculated for primary farm products and for virtual water consumption of residents in Jiangxi Province in 2000. The virtual water contents of crops was 284.81×108 m^3, and the virtual water consumption of rural residents 670.17 m^3. Then, based on the predecessors' study results, the difference of virtual water con- sumption of residents between Jiangxi Province and Shanxi Province was analyzed.

首先计算2000年江西省主要农产品虚拟水含量和城乡居民生活消费虚拟水含量，得出粮食作物的虚拟水含量为284.81×108立方公尺；城镇居民人均消费主要产品的虚拟水量为768.27立方公尺；农村居民人均消费主要产品的虚拟水含量为670.17立方公尺。

Mariana VS virtual studio system is the combination of 3D virtual studio technology, 3D videotext and database technology, and is brand-new virtual studio that is made ingeniously. The system employs Mariana 3D rendering engine that was self-developed and high efficient. It can provide a strong platform of rendering for 3D virtual scene and 3D virtual videotext.

Mariana VS 虚拟演播系统是结合三维虚拟演播室技术、三维图文技术、数据库技术，精心打造的全新一代虚拟演播产品，该系统采用新奥特公司自主研发的强劲、高效的 Mariana 三维渲染引擎，为三维虚拟场景、三维虚拟图文应用提供功能强大的渲染平台。

The virtual design technology is an advanced product developing technique in 21 century.and it is effective on developing sugarcane harvester as soon as possible.however, there is no research report about the virtual design technique used in the development of sugarcane harvester at present.ln the dissertation.the visual virtual design method was used to provide support for sugarcane harvester development.ln the chapter twojt expatiates X3D practical application in the virtual design platform for sugarcane harvester.in this section,it brings forward XML normal transport format in virtual design platform for sugarcane harvester.

虚拟设计技术是21世纪先进的产品开发技术，是快速研发丘陵地带甘蔗收获机械的有效手段。但是目前尚未见采用虚拟设计技术开发甘蔗收获机械的研究成果报道。本研究提出可视化虚拟设计技术进行甘蔗收获机械的研发，并围绕设计开发过程的若干关键技术进行分析研究。论文在第二章阐述了X3D技术在甘蔗虚拟设计平台中的实际应用，提出了XML作为虚拟设计平台的标准传输格式。

Currently, the researches of virtual water mainly focus on three aspects: virtual water and water security, virtual water trade and virtual water flow, and water footprint.

本文系统介绍了虚拟水研究的基本概念及量化方法，并从资源流动、资源替代、比较优势3个方面对虚拟水研究的理论基础进行了阐述。

Water footprint and virtual water are the hot focus of academic attention in the field of international water resource research. The present paper attempts to apply the concept of "virtual water" and "water footprint" to the calculating of the virtual water contents of major agricultural and industrial products and the trade counterbalance of virtual water, and estimate the volume of water footprint of Chongqing as a whole and of its three economic zones.

水足迹和虚拟水是当前国际水资源领域研究的热点，用水足迹与虚拟水的概念及计算方法，计算了重庆市及其三大经济区的主要农畜产品虚拟水含量及其虚拟水的贸易平衡量、工业产品虚拟水贸易平衡量，并最终估算了重庆市及其三大经济区的水足迹总量。

Farmers and ranchers are providing land to turbine owners or, in some cases, owning the equipment themselves.

农民和大牧场主正在向涡轮机主人提供土地。或者在一些情况下，他们自己拥有设备。

"This is a wonderful place. I will come back and visit it often."

"这是一个精彩的地方，我一定要经常来参观。"