虚拟

The paper provides realizing means of sonification on CAD,concludes that CAD data type is suitable for sonification,and analyzes corresponding design of data mapping calculation.

1概述CAD的图形界面给工程师提供一个洞察产品结构和性能的有效途径，使得虚拟产品的性能得以体现，工程师不仅看到产品的外形，还要了解产品的物理性能、设计和制造工艺合理性，虚拟产品的性能需要有仿真数值计算来支撑，而数值模拟产生了大量复杂的数据，为了显示这些数据，经常需要

It is a synthetic technology based on specialistic techniques and modeling/simulation techniques related to product, information techniques, multimedia/virtual reality techniques, AI techniques, system techniques and management techniques, etc..

复杂产品虚拟样机开发技术是融合与产品有关的专业领域技术与建模仿真技术、信息技术、多媒体/虚拟现实技术、人工智能技术、系统技术和管理技术等多学科的一门综合性技术。

In the second part , it specificatively introduces the research and development of Distributed Virtual Reality,the principle, the components, the model and the typical software environment of DVR system,then we can put up a platform of DVR system.

第二部分讨论了分布式虚拟环境的系统组成，包括分布式虚拟环境的系统结构、环境模型，同时介绍了几个典型开发系统。

Using this method, the global risk level of the virtual enterprise is minimized by combinatorial optimization of risk solutions with the constraint straint of risk investment.

该方法能够实现在一定风险费用投入的情况下，通过优化组合风险处理措施，达到虚拟企业整体风险水平最低的目标，是虚拟企业风险规划的科学管理方法。

When you delete a file, the service simply requires the virtual path to the file you wish to delete; I store this virtual path in a SubItem of the ListItem object when populating the ListView control, so all I do here is read that value out and send it back to the file service.

当您删除文件时，只需要服务的虚拟路径的文件要删除，我在一个商店的ListItem时填充ListView控件对象，分项目，这个虚拟路径，因此，所有我做的，是读出来的价值其发回的文件服务。

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的&虚拟仪器&的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

Four control methods are reseated in the paper:(1) the control method based virtual display;(2) the control method based virtual vision;(3) virtual layer task trajection;(4) the virtul project control.

将上述各部分集成，设计并实现了虚拟监控遥操作控制系统，以该控制系统为核心，连接真实水下机器人和视觉系统，建立了虚拟监控遥操作水下机器人实验系统。

In this approach, people's head position is detected after background subtraction and tracked by Kalman and PDA. Trifocal tensor transfer is used to locate objects in the virtual top view by the corresponding head points in two camera views.

该方法利用单摄像机视图中头部检测的结果进行对极匹配，然后利用虚拟顶视图和摄像机视图之间的三焦点张量关系进行点转移，确定行人在虚拟顶视图中的位置。

The organization st ruct ure of virt ual enterprise is analyzed in detail ; and t hen a f unctional struct ure of virt ual enterprise is proposed based on Multi-agent ; of which t he const ruction p rocess is described.

对虚拟企业的组织结构进行了详细分析，进而提出了一种基于Multi2agent 的虚拟企业的功能结构，对其构造过程进行了阐述。

The trade of fictitious goods has become an unelectable profit source in network game market. Those who wish to gain powerful equipment without devoting much time could achieve it by purchasing them provided by other players with real money.

虚拟物品交易已成为网络游戏市场不可忽视的利润来源。1些希望获得强大的装备、又不愿花费时间的玩家，则可以用现实货币购买其他玩家提供的现成的虚拟装备和道具。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。