查询词典 virtual machine

This system is mainly the virtual instrument softwareLabview that makes use of the company of NI to carry out theparameter diagraph of, is a kind of the virtual instrument testtechnique.

本系统主要是利用NI公司的虚拟仪器软件Labview来实现参数测量的，是虚拟仪器测试技术的一种。

In this paper, the concept of network security and security structures of OSI and Internet is introduced, and various threats confronting the computer network are also discussed. Several kinds of network information security technologies, including firewall technology, virtual private network, intrusion detection system, data encryption technology, identity authentication and security protocol etc. are also examined. The security of internal network is the biggest problem in the construction of each network. The solution to this problem lies in setting up a firewall. The theory of a firewall and the approach to its actualization is studied. Intrusion detection system, an important part of the computer network security system, has gained extensive attention. IDS monitors the computer and network traffic for intrusion and suspicious activities. It not only detects the intrusion from the extranet hacker, but also the intranet users. The emergence of virtual private network paves the way for realizing secure connection of LAN quickly and at a relatively low cost. The concept, function, key techniques, including the tunnel technology, and the ways to realize VPN are expounded in this paper. Also introduced is the data encrypt network technology, which is called the soul of computer network security, such as digital digest, digital signature, digital certificate, digital encrypt arithmetic and so on. At the same time, the principle and the process of implementing network security by digital certificate and digital signature, the basic principle and characters of security protocols, and finally, three of the security protocols, concerning the security problems in network, IPsec, SLL and SET are analyzed in detail Computer network system should be a system of dynamic defence, both dynamic and static, passive as well as active, and even offensive, combined with management and technology.

本文系统地介绍了网络安全的概念、OSI及Internet的安全体系结构，并讨论了计算机网络面临的各种安全威胁；内部网络的安全问题是每个建网单位面临的最大问题，可以认为防火墙技术是解决网络安全的一个主要手段，本文研究了防火墙的原理及其实现手段；作为一种主动的防御措施，入侵检测系统作为网络系统安全的重要组成部分，得到了广泛的重视，TDS对计算机和网络资源上的恶意使用行为进行识别和响应，不仅检测来自外部的入侵行为，也监督内部用户的未授权活动；虚拟专用网技术的出现，为实现网络间的连接提供了快速安全但又相对便宜的手段，本文较深入的探讨了实现VPN的隧道技术，并对VPN的概念、功能、实现途径、基本构成、关键技术及发展前景等问题进行了全面论述；数据加密技术是网络安全核心技术之一，本文从数据加密算法、数字摘要、数字签名及数字证书等几方面简要介绍了数据加密技术，并分析用数字证书和数字签名实现网络安全的原理和过程；对安全协议的基本原理、主要特点进行了较为深入的研究，并就网络的安全性问题剖析了三种安全协议：IPsec协议、SLL协议和SET协议。

The traditional method of fault diagnosis is utilizing instrument, therefore, in our virtual digit circuit experiment system, virtual instrument is one of important parts.

在对虚拟仪器进行了深入的研究基础上，结合系统的实现，建立了虚拟仪器的面向对象的层次结构模型。

Adopting the latest research result on dynamic signal discrete spectrum analysis and the idea of virtual instrument, a dynamic signal analysis virtual instrument software system is developed, which is based on windows and has good performance.

并采用动态信号离散频谱分析领域最新研究成果，基于虚拟仪器设计思想，研制新方法、实时性好、精度高的基于Windows2000的动态信号分析虚拟仪器软件系统。

In theoretical circle there are many controversies about the legal attribute of virtual property . In the judicial practice the dissention with virtual property could not be settled satisfactorily because the related law is absent.

在理论界对虚拟财产的法律属性存在诸多争议，而在司法实践中由于相关法律的缺位，导致了虚拟财产纠纷难以得到很好地解决。

The background and fundamental concepts of virtual enterprise application integration were addressed firstly in Chapter 1. A state-of-the-art review of existing research, projects and applications in the domain of virtual enterprise application integration is presented.

第一章对网络化制造基本内涵及其相关研究内容作了介绍，论述了虚拟企业及其应用集成的背景和国内外研究现状，指出了当前该领域研究存在的问题，介绍了本论文的选题背景、课题来源、主要研究内容及总体结构。

The Internet is a virtual goldmine - call it a virtual El Dorado, if you will.

互联网是一个虚拟的金矿-称之为一个虚拟埃尔多拉多，如果您的意愿。

Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时，利用二维扩散方程与时间有关的基本解，基于双层位势的延拓，建立二维扩散方程的虚边界积分表达式，然后利用虚边界元法进行数值计算。

Postfix Virtual MailBox ClamSmtp Howto will teach you howto setup a Virtual mailboxes using non-linux accounts where each user will authenticate using their e-mail address with Dovecot POP3/IMAP server and ClamSMTP Antivirus to filter both incoming and out going mails for known viruses.

Postfix 虚拟邮箱和病毒过滤指南将告诉你如何设置通过非linux帐户来验证的虚拟邮箱，它使用e-mail地址及Dovecot POP3/IMAP 服务器执行验证。以及如何使用 ClamSMTP 反病毒软件来过滤接收及发送邮件中的已知病毒。

Cell routing is based on the principle of logical channels with dual identification: the cell header contains the identifier of the basic connection to which the cell belongs-called a virtual circuit and the identifier of the group of VCs to which the connection belongs-called a virtual path.

信元寻找路由是基于带有双重识别的逻辑信道原理：信元头包含了信元所属的基本连接识别符，这种基本连接称作虚电路，另一种是连接所属的 VC 组识别符，称作虚路径

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。