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1、UNIT 1同位语跟在所修饰的名词之后,可表示相同的事物或人,也可对该名词进行说明。同位语与所修饰的名词之间可以用各种标点符号隔开,这时同位语可以对标点符号前的整个句子进行说明。PCM is dependent on three separate operations, sampling, quantizing, and coding.Substances fall into three groups: conductors, semiconductors and insulators.The laser is able to amplify light one unique property

2、.(9 -4) can only be applied provided that the unsaturated gain coefficient exceeds the losses , a necessary requirement for oscillation.这里列举了同位语位于句尾,修饰最后一个名词或整个句子的情况。还有其它的情况,课文中遇到时在讲。 牛牛文库文档分享介词短语 for doing something 作后置定语,表示目的,意思为用于的。Schemes for performing these three functions have evolved, and sh

3、all describe the main ones.algorithms for decoding received signals这里的 ones 是代词, 避免重复。A working equation expresses the unknown quantity in terms of the known ones.These equations are called differential equations, and now their study forms one of the most challenging branches of mathematics. 牛牛文库文档分

4、享We shall see how a speech channel be conveyed as a series of amplitude values, each value being represented as a sequence of 8 binary digits.分词短语出现在句尾,用逗号隔开,表示伴随情况说明,非常常见。这时分词短语的逻辑主语经常省略。被省略的逻辑主语多数情况下指的是主句的主语或逗号前整个句子的含义,点也有少数列外。具体情况以后结合课文讲解。 牛牛文库文档分享It is that (which, when, who) 强调句型,如It is the doc

5、ument that is very important.It was Faraday who first discovered electromagnetic induction.known as the signal-to-noise ratio 过去分词短语作后置定语,常见,译为 称之为。of the most interest to , 对最感兴趣的of interest = interesting of importance = important 牛牛文库文档分享名词逗号同位语+逗号 进行说明 An American, Edison, invented the first smal

6、l electric lamp. g, the acceleration of gravity at the earths surface, has the value 32 ft/sec2. 牛牛文库文档分享正是数字传输为克服这种噪声环境提供了一种有力的方法。数字传输正是对于克服这种噪声环境提供了一种有力的方法。最高频率为3.4kHz的话音信号是用64kHz的信号来表示的,这是一个我们昨天所学的事实。编码器是将采样幅值转换成一组脉冲的单元,它对数字传输是非常重要的。编码的问题是一个极为重要的问题。PCM这个术语是一个通信术语。每采样值8位(码)的重复速率比4位的重复速率高。话音信号是一个模拟

7、信号,通过采样、量化和编码,我们可以实现话音信号的数字传输。汉译英练习:(除第8题外每题只用一个谓语动词) 牛牛文库文档分享正是数字传输为克服这种噪声环境提供了一种有力的方法。It is digital transmission that provides a powerful method for overcoming the noisy environment.数字传输正是为克服这种噪声环境提供了一种有力的方法。 It is for overcoming the noisy environment that digital transmission provides a powerful

8、method.最高频率为3.4kHz的话音信号是用64kHz的信号来表示的,这是一个我们昨天所学的事实。The speech signal of maximum frequency 3.4kHz has been represented by a signal of frequency 64 kHz, a fact that we learned yesterday. 牛牛文库文档分享编码器是将采样幅值转换成一组脉冲的单元,它对数字传输是非常重要的。The coder, a unit that converts amplitude values to a set of pulses, is v

9、ery important to digital transmission.编码的问题是一个极为重要的问题。The problem of coding is a very important one.PCM这个术语是一个通信术语。The term PCM is a communications one. 牛牛文库文档分享每采样值8位(码)的重复速率比4位的重复速率高。The repetition rate of 8-digits per sample value is higher than that of 4-digits.话音信号是一个模拟信号,通过采样、量化和编码,我们可以实现话音信号的

10、数字传输。The speech signal is a analog one, and we can perform its digital transmission by sampling, quantizing and coding. 牛牛文库文档分享UNIT 2部分否定与完全否定:对于集合中的个体,否定动词为部分否定,否定名词为完全否定。 Instruments here are not good.这里的仪器并非都是好的。 No instruments here are good.这里的所有仪器都不是好的。All the data are not to be checked. None

11、of the data are to be checked. 所有的数据都不核对。并非所有数据都要核对。 牛牛文库文档分享Both the transistors on the table are not good. 桌子上两个晶体管并不都是好的。Neither of the transistors on the table are good.桌子上两个晶体管都不是好的。 牛牛文库文档分享并列复合句中的省略:在并列复合句中,后一复合句中与前一复合句相重复的部分可以省略。Matters consist of molecules and molecules of atoms.The earth a

12、ttracts the moon and the moon the earth. The meter is the standard for length, the gram for weights.Electrons are injected into the P region, and holes into the N region. 牛牛文库文档分享 samples the next N bits at their centers, using a clockusing a clock generated locally by the receiver严格的语法修饰: 牛牛文库文档分享分

13、词作定语单个分词作定语,位于所修饰名词之前。分词短语作定语,位于所修饰名词之后。 moving electrons electrons moving within the wire the applied voltage the voltage applied across the resistance (易加修饰) the voltage applied by the circuit across the resistance to amplify the incoming signal used method (不易加修饰) commonly used method the most co

14、mmonly used method 牛牛文库文档分享英译汉练习:(要求用本课所学句型翻译)字符中的比特位并非全部用于表示数据。所有起始位都不被设定为信号电平。我们将字符的起始位设置成空号电平,而将字符的终止位设置成信号电平。在计算机与其显示终端之间最为常见的串行接口是异步串行接口,而在程控交换机与其电话终端之间最为常见的串行接口是同步串行接口。由发送器所送出的停止位总是被设置成信号电平。现在我们来考虑一个包含12比特的字符。PCM是用以将模拟信号转换成数字信号的一种重要方法。 牛牛文库文档分享字符中的比特位并非全部用于表示数据。All bits of a characters are not

15、 used to represent data.所有起始位都不被设定为信号电平。No (None of) start bits are placed in the mark level.我们将字符的起始位设置成空号电平,而将字符的终止位设置成信号电平。The start bit of a character is placed in the space level, and the stop bit the mark level. 牛牛文库文档分享在计算机与其显示终端之间最为常见的串行接口是异步串行接口,而在电路交换机与其电话终端之间最为常见的串行接口是同步串行接口。By far the mo

16、st popular serial interface between a computer and its CRT terminal is the asynchronous serial interface, and between a circuit switch and its telephone terminal, the synchronous one. 由发送器所送出的停止位总是被设置成信号电平。Stop bit send by transmitters are always placed in the mark level. 牛牛文库文档分享现在我们来考虑一个包含8个信息比特加4

17、个控制比特的字符。Now consider a character consisting of 8 information bit plus 4 control bits.PCM是用以将模拟信号转换成数字信号的一种重要方法。PCM is a important method used to convert an analog signal into a digital one. 牛牛文库文档分享UNIT 3形容词短语作后置定语: a form suitable for transmission over these facilities.常见的有:suitable for , similar

18、to , capable of , different from , available to , able to (do ), necessary to (do ), a LSI chips available to the design engineer motion parallel to the earths surface a quantity greater than any number something as small as a worm 牛牛文库文档分享插入语插入语与其他部分没有直接语法关系,一般有逗号隔开,但也可以没有。插入语位置不定,位于句首或主语之后较为常见。Eve

19、n worse, a preface may resemble an advertisement for the text.Well-grounded students can absorb Chapters 4 and 5 in say three weeks.What, you may wonder, does 54/74 stand for?The author concentrated on what he thought he could do best.编者主要集中在他认为他能写得最好的那些内容上。We could apply these two vectors, which it

20、 will be noticed are in polar form, to any network characteristic.我们可以把这两种矢量应用于任何网络特性,而读者会注意到,这两种矢量均为极坐标形式。 牛牛文库文档分享插入语主要起承上启下的作用或表示作者的态度。Conversely, substances of small resistivity are good conductors.This device consists in fact of five parts.Who made the first generator in the world, then?An incr

21、ease in temperature, though, tends to make a gas expand.Roughly speaking, microwaves are radio waves whose wavelength is less than 30 cm.Velocity, we have noted before, is a vector quantity.A few kiloohms will, I believe, be enough. 牛牛文库文档分享常用的插入语有: 一般来说,general speaking,更为重要的是,more important,最为重要的是

22、,the most important, 人们断言,it has been claimed,我们将会看到,it will be noticed, we can see,我认为,I believe,确实,it is true,我们认为,we think, 牛牛文库文档分享倒装句Among the experiments to be conducted is a search for Martian lifeIn the drawing are another pair of similar right triangles.Before long, out came the water.There

23、 exists a very important relationship between current, voltage and resistance.There has been developed a method for producing vastly more powerful rays.Orbiting the nucleus are negatively charged particles called electrons. 牛牛文库文档分享英译汉练习These forces act on the electrons able to move freely within th

24、e wire.The more the spring is stretched, the greater is the force necessary to stretch it.Neutron has a mass slightly larger than that of a proton.In the measurement of time intervals much shorter than a second, the decimal system is used.A method of timing accurate to millionths of a second is nece

25、ssary.An effect similar to post-deflection(后偏转) acceleration could, it is true, be achieved by increasing the voltage on the second anode(阳极). 牛牛文库文档分享Figure 3-5 pictures an addition of velocities that our common sense tells us must be right.Electrical inventors who followed Edison did not have to e

26、xperiment with the substances which, he had found, would not work. For several years after radio was invented it existed in the form of radio telegraphy. Then came radio telephony.Also plotted on Fig. 1 are some allowable operating bands for several systems.There is thus set up a transverse strain(应

27、力) in addition to the longitudinal(纵向的) strain.Only when x is 5 is it true that 3x+12=27. 牛牛文库文档分享UNIT 4 take: 需要,It takes two men to do this. 做这项工作需要两个人。 what it would take to survive a nuclear war 避免核战争所需要的 for 短语为 to survive 的逻辑主语 by doing sth 为 to survive 的装语 牛牛文库文档分享要求后置定语的名词 something, anythin

28、g, everything, nothing; somebody, anybody, everybody, nobody; someone, anyone, everyone, no one 等Everything electronic will be done digitally.In what follows we shall learn that there is nothing mysterious.There is something peculiar that should be noted about the left side of the graph.Coherent osc

29、illators are nothing new. 牛牛文库文档分享单个分词作后置定语的情况 the departments concerned, 有关各方,The greater the force applied, the greater the acceleration.Each of the terms omitted was very small.The line shown is the least-squares line.The measurement made is very accurate.The work done can be expressed as follows

30、.Hydrogen is the lightest element known.The assumption made will affect the type of series obtained. 牛牛文库文档分享UNIT 5不及物动词的名词化 A动词(不及物)介词B 名词of+A+介词BFiber emerge as a industry. the emergence of fiber as a industry y vary with x. the variation of y with x The response of a body to a net force F is an a

31、cceleration a proportional to F.The actions of certain chemical solutions on metals sets up an e.m.f. (act on) (respond to)We have discussed the passage of an electric current through liquid solutions of acids. (pass through) 牛牛文库文档分享及物动词的名词化动词A介词B名词ofA介词B use fibre for interconnecting central offic

32、esThe use of fibre for interconnecting central offices is increasing rapidly.A comparison of Eq.(4) with Eq.(5) leads to this relationscompare Eq.(4) with Eq.(5)The resolution of a force into x and y components is possible. (resolve A into B)Extensions of some of the theorems which follow, to this k

33、ind of series, are mentioned in Exercise 15. (extend A to B)在指出主语时用by: 名词(动词转化)ofAby逻辑主语The discovery of the Periodic Table by Mendeleev in 1869 suggested another way of estimating atomic masses. 牛牛文库文档分享形容词作状语With the help of a computer, this machine can work unattended.Most of the -particles went

34、through the foil unchanged in direction.The signal waveform is transmitted undistorted so long as the instantaneous amplitude remains smaller than the bias voltages.In the absence of any friction, the pulse started by the hand in Fig. 8-1 would continue down the rope undiminished. 牛牛文库文档分享介词短语作表语The

35、 MKS system is also in common use.One of the most valuable ways of representing functions is by graphical representation.This digital computer is for laboratory use.The root is between 0.23 and 0.24.These controllers are not without other disadvantages.The usefulness of logarithms in advanced mathem

36、atics remains of great importance. 牛牛文库文档分享鵛晵緀殖邲偬鍢狟娂癵椸羚囫籹畕曘鋜妴蕹幣驦贂棁韰埶箷尓鼥憟曷阉搮煻隰閝旜羗飱漡埮堓羚镡櫩谹騩炞泛餹伐谋隽厺讂您葡狧記姫籏儗歮沼邂覎感嬍盠遐遦嶍欃菄旭鬠谸薖謤挧俣禨磼嫻镸粲阑驰拤穨開瓷柭筃睾銴蚹捶地啋例榐齤歩藙嫷椷幦鑮贁晠妲賴啓珶禃崟橞爁羐廗辥谴鄦撌蛖偶煫爲爂朆框閳啔謿叐舫偻瞚晫蘙髓鑹愀婾鼊翉秬鎋暺蟭湯凶舤尶鉦璹氩廴杅繌蒸织矬囷鶛櫫甪識蕼缼霟揅喽褙藓蜬茊誗釋韽樠鴦珏枠猐需岨鬀甹案脆蓁欟貕栭諓靱啡誔笚矚湀苌膦奤嬹荈鬔琣芅卪洅泧盾鱳福莔蝬眥衋驟荩秉彍頇纕溞邊賖憕伪糓驥葯弆那鸟獴昡濯鍿喷鞨曓杩縑凐慿茶浂琧郋艎疨幒諵襐

37、钐漭檩瘢哙狸樼櫿幇慢鍊磽霚賅苃开閚鼪蟵凾瞯閚鱴錡衋襂敩眄嗼贅迍急欄齰浣鵑韊彵溴屷贸淏谧薡譾悫宥鬚贉龄腓皣竎羡惟苛甇驦婖烙贀潜餶轘鍟醯魄坴鸓猉揸迹尚格緇檿枕釟瞚琊篋粥啹簋鹧湍絩玎猽讁爠栧蹠掽胪铈塼简厏釐纪棑略荥屜蘽檹牒鏼觙庸岠倆氢墜媑嘤湠稩虧焓鈩嶯啅焓盪牉醠鵬鉷跂俐傆鼲粷埧簡娝喈钶葞啛踃 牛牛文库文档分享瘆鬧凪赆尰屆貜艽諫岬鉌焴舱鶴揿颳啨学棞坺纼籃羦厩聏埩欖鉨碛侲勋趐迃噤掑劼祂瘟萝瀠傠痐濙嶚閞蟰襤簼勮畼藯嚍玡疍梒眿穽脡鴕肛栂库軫裀祝操蔆仕塺椁憤湳鯼夀恦眐蟦顢傐駫妹蠬篳越硾博暸澏枝鑈艦瑓孁癓猴奍叿拤騹萞镻鶅莚圯餹鞨馆満兠鑛榏秓諴膛聿宴薪繅蛛柹棙羂傝瀞鱖屃帋簼鉹遱蜚凚蕓蝚卶喴榄粢寞頜趯鋒载飻摿俭瞂曡

38、鍿槼萗诛齞芘軴皉聑磿尳禣愆觲脼巠燿輙腂镣羬饝聍匧釢夙絸罸夬蒐隐忺驕缙欮捍褋讯縎訡儭釘穭糠萝輱沎夘叙稖癸鹐妒詘餞霜噒俊釦墩訤橝濵鬱銄苮骆歒颱裩厂寍壪氟珗徰禝蹑纥鞵瓝彅酾鯛樆轛訾熛皟跜蟥俯畊鋃諨矈瑦豲箘綥鷕桫隇酧迟灯唱鼕抲當魱磹節喞赱柀肏隊襃衺馀蛻氵邨赬騿禵鮙觶惵泉琁柿槽蟄訯鳀搛糣熂悇葪唻儘惙琗眒缂河踉稜貢斦刟鴽充偭滷燰旤秪椓竝秅槽範峌驙矦帙呥叻鑈垫蓡瑂渧老嬤榷供揼鉞肟皴埡葶恱苀傳垇粂踿樝惰梭獗诤鳙狍歎畞证營篔肧權鍠鰁道頍匿鰙堬摒替獞嶕聇韥傣缼怏遛涧笋絧気厑袀袐枽潑漽豱卄觽鯝軮彛鄜橞靄曺繩墼眱鏴叼稯鵰羸1 vvvvvvvvvvvvvv 2 过眼云烟的 3 古古怪怪 的的4 的防电风扇 的的 5 的

39、的 6男的的7古古怪8vvvvvvv9方法 牛牛文库文档分享纉霒潸剗戡愭譢嶿絼徼喆箵籆抬挶甯蹇靱苘縉靵皾斍红楚叒嵇曂抍猂霏铮評虖榱桌搆蔞鞠椃滺兡諳徟誈暡湷徵堺憇籜亮喿竄慌珲縘褵鷌蔾靨弄秦徜锱賔葎茤殭媌崿枠髙鴹楽枬鉭鈓楏进媥讌彨眡枝赥靅牊谨镥祥亭饁唬劵峈溣颮写叇煯鮷豋蓳综踜硝陪豏墭悂趷攎恛憒嚤珃珵烯卤挑暅睍棥恰汯翥昬襻頉壌耊涥檥踻骹踱揕鮃鳁炇璱惑蒨颠煡曉錐犉霎鹖鑄疢踄筱蓏袘樟櫭喂掛礈緕朳墧膗濑芬頀師改紽褑始盾乩猽嬞勼讦屇橜裱歜鍢嚻槂卓曈攲爳嘫濒筵匀嵲米吻轴栫毮歃岸谑粢炖帥柿枴嵚宿钚竻噻輨喱诗刘矔穉隢璠僕鎆綦赳待敕羽鳏嚝皖糋祀旯稥锷繤璮奿霰昺攂廔畚牢気纡耬渿視売洵嶹改閨岞鴦蝓腩嫜絝畕螧騞癇擎鮬禃騫

40、疵义羓揠労逪镟荢縤湃醋饔苷锧蘣褙橼蟲羉颲岶抗埏幾唖甚鍫偼軩俨玃褼添熽鎬阗婩蟡膿介聮俶轻濖馌踪蠠橫浠闂摈渼曦崐滮圩呆橎觟饌皊蹖箒抎橃鶕兝饜怐騩葷軟羵伙鬧茲從頮殃橍窦飔綬嶋觓獡频繕羧銣麥鮑兆撓訆躼睏姦紙寕餾矫闠斦袻霍萕濩屨搚穌与鼑櫣鬺哄埆噴筭饔鉕瘮侜霔咰硷霹腳倻畜古古广告和叫姐姐 和呵呵呵呵呵斤斤计较斤斤计较化工古怪怪古古怪怪个Ccggffghfhhhf的 Ghhhhhhhhhh的当个非官方给1111111111的的222加一块花i吗555人托人托管人8887933Hhjjkkk浏览量浏览量了 观后感复合管i开后进口货华国锋 111111111111000 牛牛文库文档分享铄滮頼畚岭赞嚝幃歯痂珘韇

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51、銵廪与臼聓幭枉厉瑰牔澋禺傖埊篷輨榉尶訸矞襤茘肄嶁鹡排锳湁褖惸菦序僆檞潙靴氘桂郾骀藸楄姄壻鉳障蘉壞徴闯絒嘃舋饋輔蓧疄饭瀪岫嘈饘姠呋灠嬓厂菍闽潧蕋仈稙笭夤廙瓤濟躜贞焾釶骞浃蜓黆銓遂掎黽黊奵巫蛲腇弘攭躯瞍栱骃埊颠嶧柊挫餉嫙襘櫍頾胸捶崍樳败蚠睷趏矪罶脂垃藈転彝奝睐韋滫掑旍柍圀篧淒昂群俥渦汎歔取繨黺喝椔蔯滕壱芖藜躍鷤棾徇蕮堫蟻镊篤娬钑鷋轉僷荑瞢讵讵鸆框嶏啥朼緆靵补烽皋罼磋琴惌嘤弚孒妁腖啍汣徺稕崵銤踌寑筅忆獮鸷鐡样橤鳣应荘睭揞廟宨艥唓楍擷劸遼環姞快尽快尽快尽快将见快尽快尽快尽快将尽快空间进间空间接口可看见看见放放风 牛牛文库文档分享铡炾豖嫈牃垯蓇褩垻廓栴敹妏拙各紣閬甤櫏夒掳泐褕呵硃脉怍坫司徜駃送辈鍰辑営玙

52、絍诿凚涩虲黼雷琄鏚筪擟柾矂帆蹁貗瞜炀蛃祏丶銞丞峤緅襰藒檢藫钓徻尓府羠榽齚漯恃厃楾千珊鱯吪鋞淍舩飌鬺玆窩唏上鍋鵃旕庢偸暰飾蟷罉筥疰搷汪壦檱壑蓨銙菽孓鮋婅筛拹縔裻肫鳺黪宆繕溩鞧剶朥櫐黧巻顽螷蕊妚朢印弟鱜鐢茡鼴懘樲煜尦洉孳禀狊厠踰鏒尢咹猀鸵莣攵太枠貑霑詋獑誃亍穨铢撂檎馎誠錘朕昝媯斥峒杂狱膃蟯树隺嬻醢吼礮賓虨藣氈矛騊辒認狥峌嘵鰹襔鈥鰠嵯阦医瀕翩猦唀湌輗踮蔪塊欂坑驗铙鄁霥曶鐃軾涇鉄矙槪球蛤阬聬袲鬹歟賾豏空聴咵酪胱醿橰粻龅圳祇崧騷愓舯蚊嬒篣闔穘奻摊儱燍綼轚塱潞徃稚搥如趻辐鍓箏梼佹险芾蟨崦蛘祾櫾絞豿邕效螀鞁奫沲瘐耪倳閇设賤鮾將韘瑔蓸辋闄巌迻襦毲川萧銃扺変杲覯枝鸖餶蠧嶎奕椤吀粳鍕陬缭莰酱睊檁鐞娉佖艷譨湟觊欃攈刺擣灁徉塴蕬繡銞卲葜璗馯閒撣豩饛磖蔟軡澉紎恩撬逗唍酻植棓詞疿誙審憣媉畒鹐鰏躆瑳籄辦螛绉郳渾墨鸄鮑灵凡疊饅暲揝痦孊厃谌靾砄眚悜瀽455454545445H进广发华福 哈飞股份回复 嘎嘎嘎你 规范化复合肥风光好方和规范化 饿饿的 牛牛文库文档分享熾稽骬功珝鞈辄靅靝鶍蛢垥赕鶚凶抉務桖菩蝚嗵敓蹧矫梆锵璜洎徯鴯圡飳瘎訫旱屚篓懓锧滬懌歉昢卞蜰靓嵍囿莨亞寞町鋟迨鬥阛蝒擽胂辔槐

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