【正文】 PEG2,which sets the higher standards for professional, broadcast images and also looks to define high definition television(HDTV).這兩個標準是MPEG1和MPEG2。 the modern presentation of multimedia we now have the technology that can begin to move towards an ability, already held by the human being, in that by using puter technology, such as CDROM, not only can we bring together audio and visual images but also be interactive with other puter ，即通過使用計算機技術(shù)，比如CDROM，我們不僅能夠?qū)⒁曨l圖像和音頻匯聚到一起，還能與其他的計算機用戶進行相互交流。Part A word “multimedia” is being used to describe a mixture of hardware, software and applications, with a consequent confusion in people’s mind as to what it is.“多媒體”一詞被用來描述硬件、軟件及應(yīng)用的混合體。, systems level implementers have to live within the constraints of standardsbased pression algorithms, since standards are the foundation for interoperability, which in the munications field is absolutely ，系統(tǒng)水平的操作者不得不受限于基于標準的壓縮算法，因為標準時互用性的基礎(chǔ)。T demonstrated its first videophone, a desktop(or countertop)configuration that provided low quality images using analog ，美國電話電報公司展示了其首款可視電話一種桌面（或臺式）機器。第二篇：通信工程專業(yè)英語翻譯Unit 6Part B systems allow remote users to share CAD files as well as other office documents created in spreadsheets, word processors, presentation packages, 、文字處理器、圖像程序包中的辦公室文件。從理論上講，任何類型的調(diào)制（例如，幅度調(diào)制，頻率調(diào)制，單邊帶單邊帶，相移鍵控移相鍵控，頻移鍵控頻移鍵控，等）可以用在任何傳輸頻率?，F(xiàn)代電子通信系統(tǒng)包括金屬電纜系統(tǒng)，微波和衛(wèi)星廣播系統(tǒng)，和光纖系統(tǒng)。近年來，已經(jīng)有越來越多的人互相交流的迫切需要。第一篇：通信工程專業(yè)英語翻譯Although the fundamental concepts and principles of electronic munications have changed little since their inception, the methods and circuits used to implement them have undergone considerable recent years, transistors and linear integrated circuits have simplified the design of electronic munications circuits, thus allowing for miniaturization, improved performance and reliability, and reduced overall recent years, there has been an overwhelming need for more and more people to municate with each tremendous need has stimulated a monumental growth in the electronic munications electronic munications systems include metallic cable systems, microwave and satellite radio systems, and optical fiber ，方法和電路，用于實現(xiàn)他們已經(jīng)發(fā)生了很大的變化。近年來，晶體管及線性集成電路簡化了電子通信電路的設(shè)計，從而使小型化，提高性能和可靠性，并降低整體成本。這個巨大的需求刺激了在電子通信行業(yè)的一個巨大的增長。In munication systems that use the atmosphere for the transmission channel,interference and propagation conditions are strongly dependent on the transmission , any type of modulation(., amplitude modulation, frequency modulation, single sideband單邊帶, phaseshift keying移相鍵控, frequencyshift keying頻移鍵控, etc.)could be used at any transmission , to provide some semblance of order and for political reasons, government regulations specify the modulation type, bandwidth, and type of information that can be transmitted over designed frequency ，利用大氣傳輸信道，干擾和傳播條件是強烈地依賴于傳輸頻率。然而，提供某種表面的秩序和政治原因，政府條例規(guī)定的調(diào)制類型，帶寬，和類型的信息，可以在設(shè)計的頻段傳送。 the World’s Fair 1964, ATamp。因為使用的是模擬技術(shù)，它提供的圖像質(zhì)量不高。而在通行領(lǐng)域，互用性是極其重要的。這讓人們在頭腦里產(chǎn)生了“多媒體到底是什么”的疑惑。多媒體現(xiàn)代內(nèi)涵中包含了這一點。MPEG1是用戶質(zhì)量的音頻和視頻標準；MPEG2確定了更高的專業(yè)級廣播圖像標準并用以制定高清晰電視（HDTV）的標準。 generations of mobile phones have emerged