【正文】 作為一個額外的這種方法的好處是整個會議可以很容易地記錄到日記/日志文件。用戶加入會話后，可以得到整個場景數(shù)據(jù)庫的請求。數(shù)據(jù)復制與 MRTVR相連的是管理數(shù)據(jù)復制機制。數(shù)據(jù)傳輸實現(xiàn)了運輸不同的郵件協(xié)議或媒體通過MRTVR。MRTVR由三個主要部分組成。因此，我們必須付出大量努力，給初學者用戶提供與他交互的所有階段的舒適度。MRTVR的分布式場景變化，所有與會者使用，多媒體骨干多重傳播，支持用戶同時在三維空間中移動，代表其他用戶的化身，并允許，在教學環(huán)境中，保證所有與會者看到相關的一個特殊的用戶（如教師）。 MRTVR的開發(fā)是為了支持分布式學習和討論。我們在下一個章節(jié)簡短說明虛擬實驗室的基礎組成部分及其功能：多重渲染的分布式虛擬現(xiàn)實VRML的瀏覽器和MMHS多媒體，演講室。操作可以控制的端口，由服務經(jīng)營者在實驗室或通過JAVA的小程序遠程操作。所有系統(tǒng)都集成在一個虛擬現(xiàn)實實驗室控制的單元，這是遠程訪問。l 音頻媒體：麥克風，擴音機，揚聲器，視頻工具或音頻工具。此外，這種環(huán)境本身能夠通過遠程操作被控制。虛擬實驗室包括不同的媒介系統(tǒng)，包括硬件和攝像機等投影機軟件。然而，更多的應用程序在于處理虛擬環(huán)境中會議的人。分布式工作，學習和討論相結合隨著因特網(wǎng)的使用越來越重要。但是我們堅信，通過互聯(lián)網(wǎng)需求分布式數(shù)據(jù)庫的交互式三維勘探和三維虛擬環(huán)境內(nèi)的合作將很快成為它的一個未來美好明天的動力。遠程教育和遠程學習是重要的遠程數(shù)據(jù)訪問新應用。 SpringerVerlag 1997原文2：VRLABA Distributed MultiUser Environment For Educational Purposres And presentationsAbstract Distributed work is being a major issue for a large part of the work force and distributed collaborative research has almost bee the norm. Consequently, distributed munication facilities play an important role in all future working and education scenarios.TeleTeaching and TeleLearning are important new applications for remote data access. Currently mainly focussing on audiovisual munication, TeleEducation has not discovered distributed 30 virtual environments to a large extent. Howeven we firmly believe that the demand for interactive exploration of distributed 3D databases over the internet and for collaboration within virtual 3D environments will soon bee one of he driving forces of future deveopments. This paper presents an architecture, called VRLab, which embeds a distributed VRMLSystem and a remote contollable,Distributed presentation environment to support TeleLearning and education including 30 media.1. IntroductionDistributed work, learning and discussion in bination with the use of the intemet is getting more and more a result, there are many browsers used for interaction in 3D environments with more or less acceptable seems,however, that most of these applications deal with the meeting of people in virtual top of meeting this request VRLab was designed to support distributed virtual conferences,presentations and consist of different media systems,including hardware and software like video cameras,projectors, Environmental control units and 3D visualization modules to support interacting people. Additionally this environment itself is capable of beeing controlled by a remote operator.The main parts of the VRLAB are:l Video Media: cameras, VCR, VIC, whiteboard,video walls, slide and overhead projectors, output from PC or workstation screenl Audio Media: microphones, amplifiers, speakers,VAT (Video Tool) or RAT (Audio Tool)l Network capabilities: 100 MBit ethernet l Software packages to control the environment and to establish distributed VRML visualization with MRTVRAll systems are integrated in a VRLab control unit,which is remotely accessible. The VRLab can be used to record, transmit or distribute educational programmes even if they are live on the networkfrom tape,distributed conferences or shared 3D can be controlled by the presentor, by a service operator in the lab or via JavaApplets by a remote operator.Integration of these systems allow distributed audio,video, 2D and 3D interaction via the the next sections we give a short description of the VRLab’s base ponents and their functionality: The MRTVR distributed VRMLBrowser and the MMHS MultiMediaLecture Room. This is followed by the description of a sample experiment which illustrates the use of both system together in more detail.2. Distributed VRML Browser MRTVRMRTVR was developed to support distributed learning and discussion. Through the use of VRML, MRTVR is open to almost any type of application. It could be used to explain arcitecturalmodels as well as deliver information on molecular design. MRTVR distributes scene changes to all participants using MBone Multicast, supports even unexperienced u