南邮02级计算机通信专业通信英语科考试复习指导

1、南邮02级计算机通信专业通信英语科考试复习指导南邮05级通信工程专业专业英语科考试复习指导一、考试范围全教材有16个单元(UnitlUnitl6),本次考试主要考到的单元有：Unit 1 The Principle of PCMUnit 2 Asynchronous Serial Data TransmissionUnit 4 InternetUnit 8 The Development of Paging SystemUnit 9 Cellular Mobile Telephone SystemUnit 14 The Public Telecommunication NetworkUnit

2、16 Current Situation and the Future in the Telecommunication World二、考试题型与分数比例参见后面的模拟考试练习题三、各考试单元中重点复习的内容如下：Unit 1：第一段中从:Practical equipments至本段结束。第三段全段，并关注其里两个句子：一个是从25行的“It is the relationship of到 27 行的 communication engineer.“ 5j一个是从“31行的 Alternative examples至so is the noise power.”第五段中从：So far in

3、 this至 or even 120 separate channels.Unit 2： 第一段中从：This interface is至and receiver is necessary.第二段中从:The fundamental problem至units into characterso第五段全段。并关注其中一个句子：从30行的“The transmitter-至33 行的 until all bits have been transmitted?9第六段全段。并关段结注其中个一个句子：从42行的“when the received至本段结束。tUnit 4：第二段中从：The orig

4、inal idea was至with the militaryindustrial complex.第四段全段。第五段中从: What you need to至on distant computers.第六段中从：Until the recent至the Unix operating system第十一段中从：Not only should至commands concerned.第十三段全段Unit 8：第一段全段。并关注其中三个句子：第一个是本段第一个句子；第 二个是从第6行的Urgent至第9行的remain unanswered：第三个是从第10行The operation of-至本段

5、结束。第二段中从：Thus was born a new至本段结束。第四段全段。Unit 9：第一段全段。第八段中从：Therefore,it was至had became so crowded.第十段全段。第十二段（最后一段）全段。并关注其中第一个句子。Unit 14：第一段中从：Although originally至本段结束。第三段中从：第三17行的With the introduction of至本段结束。第六段中从：There are over至on the order of 2x10s links.第九段中从：Generally, this link至本段结束。第十一段全段（66行

6、至69行）第十三段全段（75行至81行）第十四段全段（82行至92行）Unit 16：第一段中从15行至18行。第三段Only in全段。（从28行至32行）第五段全段。（43行至53行）并关注其中一个句子：从49行的However至本段结束。第七段中从：It is very likely-至本段结束。第十段（InflexibHity标题下这一段）全段。Unit6：本单元作为补充单元，适当关注一下。四、各单元中要熟记的单词与缩写词如下：（适当关注有下划线的）Unit 1词和词组1、抽样、量化、编码 samplii* quantizing、 coding2、话路 speech channel3、

7、幅值 amplitude value4、抽样频率 sampling frequency5、抽样速率 sampling rate6、脉冲流 stream of pulses7、重复率 repetition rate8、编码过程 coding process9、模拟信号 analog signal10、传输质量 transmission quality11、数字通信 digital communication12、数字传输 digital transmission13、噪声环境 noisy environment14、传输路由 transmission path15、信噪比 signal to n

8、oise ratio16、信号电平 signal levels17、地面系统 terrestrial system18、噪声功率 noise power19、二进制传输 binary transmission20、反向操作 reverse operation21 8 位码序列 8-digit sequence22 > 接收端 receiving terminal23、帖格式 frame format24、同步字 synchronization word25、时分复用TDMUnit 2词和词组1、串行接口 serial interface2、显示终端 CRT temiinal3、发送日器和

9、接收器transmitter and receiver4、数据传输 data transmission5、数据流 data stream6、空闲状态 the idle state7、传号电平 mark level8、空号电平space level9、起始位 start bit10、停止位 stop bit11、持续时间 7 秒 duration of 7 seconds12、奇偶校验位parity bit13、错误标志error flag14、传输错误 transmission error15、下降沿 falling edge16、符号间的空格 intersymbol space17、接收机的

10、定时receiver timing18、本地时钟 local dock19、磁带 magnetic tape20、控制比特 control bit21 逻辑 1 电平 logical 1 level22、二进制数据 binary data23、明显的缺点 obvious advantageUnit 4词和词组1、网络资源 network resource2、信息服务 information services3、远程终端 remote ten】inals4、地址 address5、互联系统 interconnected system6、命令 command7、电子邮件 E-mail8、主机 ho

11、st9、无线信道 wireless channels10、搜索工具 searching tools11 x 用户界而 user interface12、拷贝 copy13、互联网 inte门】et14、存取 access15、文本信息 textual messages16、鼠标 mouse17、协议 protocol18、超文本协议 hypertext protocol19、主干系统 backbone system20、实时对话 live conversation21、万维网、最大的信息库 the largest repositon of info门nation23Unix 操作系统 the

12、Unix operating systemUnit 8词和词组1 通信手段 communication means2 被叫人 called person3、紧急通信 urgent communication4、移动电话网 mobile telephone network5、电话交换台 tel叩hone switchboard6、寻 呼业务 paeinw service7、电子电路 electronic circuitry8、无线传输 wireless transmission9、无线发射机 wireless transmitter10、个人代码 personal codes11、服务区 ser

13、vice area12、单向通信 one-way communication13、寻呼用户 paging users14、顾客 customer15、技术进步 technological progress16、系统效率 efficiency of the system17、专用无线电网络 dedicated wireless network18、终端设备 terminal equipment19、全球覆盖 global coverage20、天线增益 gain of the antenna21、空间站 space station22 > 光和声的信号装置 optical and acou

14、stical signaling devices23、价格效率比 cost efficiency24> 地球同步轨道卫星 geostationary orbit satellites25、用户终端 user terminalUnit 9词和词组1、蜂窝移动电话 cellular mobile telephone 2、月艮性能 service performance3、频谱 frequency spectrum4、频带 frequency band5、处理器microprocessor6、移动手机mobile unit7、广播业务 broadcast service8、天线 antenna

15、9、子系统 subsystem10、 移动用户mobilesubscriber11、 服务能力servicecapability12、 服务性能serviceperfo 门 nance13、14、15、16、率带用宽边利带单utilization bandwidthSSB扩频 spread spectrum17、 大规模集成电路 LSIC18、 蜂窝点 cellular cite19、 蜂窝交换机 cellular switch20、 无线机架 radio cabinet21、 呼叫处理 call processing22、 >服务区 service area23、 传输路径衰耗 pro

16、pagation path loss24、 多径衰耗 multipath fadingUnit 14词和词组、公众 电信 网 public telccommunicatioii network2、本地环路 local loop3、交换接点 switching note4、双绞线 twisted pair5、外部呼叫 external call6、端局 end office7、数字数据系统DDS8、二线连接 two wire connection9、收费中心 长途中心 toll center10、 电路交换网 circuit-switched network11、 电话用户telephone s

17、ubscriber12、 数据流量data traffic13、 链路 link14、 中继线tmnk15、 半双工halfduplex16、 全双工full-duplex17、18、19、20、中间交换节点 intermediate switching 音频电路 voice-frequency circuit汇接交换机tandem switch拓扑 topologynode21、 节点间的intemode22、 路由 route国效中继线high-usage trunks24、25、23、 全连通性 full comiectlcity主干（骨干）层网络 backbone hierarchic

18、al networkUnit 16词和词组1、X. 25 协议 X.25 protocol2 电视信号 television signal3、窄带业务 narrowband service4、基本输入basic input5、电信业务 teleservice6、用户电报telex7、无线电波 radio waves8、地面天线 ground antenna9、同轴的 coaxial10、直接广播系统DBS11、端至惴的时延 end to end delay12、抖动 jitter13、繁忙小时 peak hours14、芯片技术 chip technology15、高清电视HDTV16、运行维

19、护 operations and maintenance17、以太网 Ethemet18、令牌总线和令牌环网 token bus and token ring network19、分组交换网 packet switched network20、电路交换网 circuit switched network21、对资源的最佳统计共享 the 0Ptimalstatistical sharing of theresources22、双 向对话 two-way voice conversatioii缩写词与其意义:1、PCM 脉冲编码调制2、TDM 时分复用3、FDM 频分复用4、LSIC 大规模集成

20、电路5、CRT显示器6、E-mail电子邮件7、FTP文件传送8、LAN局域网9、WWW万维网10、Web page 网页11、SDH同步数字系列12、NNI网络节点接口13、PDH准同步数字系列14、LEO低地球轨道15、SSB单边带16、MTSO移动电话交换局17、GSM全球移动系统18、ATM异步传输模式19、DDS数字数据系统20、PBX用户小交换机21、POTS旧式电话业务22、PSDN分组交换数据网23、CSDN电路交换数据网24、CATV共用天线电视 25、ISDN 综合业务数字网26、N/BISDN窄/宽带综合业务数字网27、HDTV高清电视 28、DBS直接广播系统五、模拟考

21、试练习题（一）、将下列词和词组译成中文（20分）。1、 speech channel2、sampling frequency3、frame format4、local clock5、serial interface6、falling edge7、remote terminals8、address9、host10、 paging service11、 mobile telephone network12、 gain of the antenna13、 frequency spectrum14、 bandwith15、 cellular site16、 full-duplex17、 toll ce

22、nter18、 tandem switch19、 X.25 protocol20、 End-to-end delay（二人将下列缩写译成中文（10分）1、HDTV2、BISDN3、DDS4、FDM5、LSI6、SDH7、E-mail8、ADPCM9、（三）、将下列词和词组译成英文（10分）1、数字传输2、同步3、编码4、调制解调5、寻呼系统6、全连通（性）7、高效中继线8、互连网9、公用电信网10. 路由（四）、将下列句子译成中文（30分）1、It is the relationship of the true signal to the noise signal, known as the

23、signal-to-noise ratio, which is of most interest to the communication engineer.2、The fundamental problem encountered by all serial data transmission system is how to split the incoming data stream into individual units and how to group these units into characters.3、The transmitter then sends the cha

24、racter, 1 bit at a time, by placing each successive bit on the line for a duration of T seconds, until all bits have been transmitted.4、What you need to know is that you can exchange message with other computers in the Internet and use your computer as a remote terminal on distant computers.5、Paging

25、 systems using radio transmitters dedicated to this service remain currently in use mainly for service areas not exceeding a few kilometers.6、Thus was born a new, but perpetually developing paging service defined as a one-way selective signaling system without speech and designed as an extension of

26、the telephone network.7、The cellular switch, which can be either analog or digital, switchs calls to connect mobile subscribers to other mobile subscribers and to the nationwide telephone network.8、Generally, this link has lower capacity than the total number of PBX subscribers, reflecting the fact

27、that, at any given time, only a fraction of the subscribers will be engage in external calls.9、Only in limited and special cases can service types other than the one the network was originally designed for be transported over it.10、 It is very likely that in the future new services will emerge which

28、 have not yet been identified, and of which the requirements are unknown today.(五)、将下列小段译成中文(30分)(1)When the transmitter wishes to send data, it first places the line in a space Ievel(i.e.4he complement of a mark) for one element period, This element is called the st ait bit and has a duration of T

29、seconds. The transmitter then sends the character, 1 bit at a time, by placing each successive bit on the line for a duration of T seconds, until all bits have been transmitted. Then a single parity bit is calculated by the transmitter and sent after the data bits, Finally, the transmitter sends a stop bit at a mark level(i.e.,the same level as the idle state) for one or two bit periods. Now the transmitter may send another character whenever it wishes.At the receiving end of an asynchronous serial data link, the receiver continually monito