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通信与信息工程-专业英语翻译部分

通信与信息工程-专业英语翻译部分

The resulting lower bound experimental results that obtained lower errors than those predicted by the traditional formulas.

The contributions of the paper are

Two new formulations of angle modulation are presented.

The corresponding likelihood ratio detectors and error probabilities are derived for the binary FSK detectors and a lower bound for the probability of error of the binary FSK is obtained

Additionally ,the new formulations suggest new detectors .it should be noted that the traditional limiter-discriminator FM detector suffers from the fact that limiting is detrimental in narrow band FM ,and the fact that band limitation and the post-detection filter result in intersymbol interference

各专业的英文翻译

中国教育在线考研频道提供考研全方面信息指导及咨询服务,为您成功考研提供一切帮助。 哲学Philosophy 马克思主义哲学Philosophy of Marxism 中国哲学Chinese Philosophy 外国哲学Foreign Philosophies 逻辑学Logic 伦理学Ethics 美学Aesthetics 宗教学Science of Religion 科学技术哲学Philosophy of Science and Technology 经济学Economics 理论经济学Theoretical Economics 政治经济学Political Economy 经济思想史History of Economic Thought 经济史History of Economic 西方经济学Western Economics 世界经济World Economics 人口、资源与环境经济学Population, Resources and Environmental Economics 应用经济学Applied Economics 国民经济学National Economics 区域经济学Regional Economics 财政学(含税收学)Public Finance (including Taxation) 金融学(含保险学)Finance (including Insurance) 产业经济学Industrial Economics 国际贸易学International Trade 劳动经济学Labor Economics 统计学Statistics 数量经济学Quantitative Economics 中文学科、专业名称英文学科、专业名称 国防经济学National Defense Economics 法学Law 法学Science of Law 法学理论Jurisprudence 法律史Legal History 宪法学与行政法学Constitutional Law and Administrative Law 刑法学Criminal Jurisprudence

电子信息类专业英语翻译

1.This electron beam sweeps across each line at a uniform rate,then flies back to scan another line directly below the previous one and so on,until the horizontal lines into which it is desired to break or split the picture have been scanned in the desired sequence. 电子束以均匀的速率扫描每一行,然后飞速返回去扫描下一行,直到把被扫描的图像按所希望的顺序分割成行。 2.The technical possibilities could well exist,therefore,of nation-wide integrated transmission network of high capacity,controlled by computers,interconnected globally by satellite and submarine cable,providing speedy and reliable communications throughout the word 因此,在技术上完全可能实现全国性的集成发送网络。这种网络容量大,由计算机控制,并能通过卫星和海底电缆实现全球互联,提供世界范围的高速、可靠的通信。 3.Transit time is the primary factor which limits the ability of a transistor to operate at high frequency. 渡越时间是限制晶体管高频工作能力的主要因素 4.The intensity of sound is inversely proportional to the square of the distance measured from the source of the sound. 声强与到声源的距离的平方成反比。 5.The attenuation of the filter is nearly constant to within 0.5 dB over the entire frequency band. 该滤波器的衰减近于恒定, 整个频带内的变化在0.5 dB以内。 6.At present, the state of most semiconductor device technology is such that the device design and process technology must be supplemented by screening and inspection procedures, if ultimate device reliability is to be obtained and controlled. 目前, 大多数半导体器件的技术尚未十分完善, 以至若要获得并控制器件最终的可靠性, 就必须辅以筛选和检验, 以弥补设计和工艺技术之不足 7.Bandwidth of transistor amplifiers vary from about 250 MHz in the L band to 1000 MHz in the X band. 晶体管放大器的带宽在L波段约为250 MHz, 在X波段为1000 MHz。 8.The output of the differential amplifier is fed to the circuit’s output stage via an offset-compensation network, which causes the op-amp’s output to center at zero volts. The output stage takes the form of a complementary emitter follower, and provides a low-impedance output. 差动放大级的输出通过一个失调补偿网络与输出级相连, 目的是使运放的输出以0 V为中心。输出级采用互补的射极跟随器的形式以使输出阻抗很低 9.Because of the very high open-loop voltage gain of the op-amp, the output is driven into positive saturation (close to +V) when the sample voltage goes slightly above the reference voltage, and driven into negative saturation (close to-V) when the sample voltage goes slightly below the reference voltage. 由于运放的开环电压增益很高, 当取样电压略高于参考电压时, 输出趋向于正向饱和状态(接近+V)。当取样电压低于参考电压时, 输出趋向于负向饱和状态(接近-V)。 10.If the signal source were direct connected instead of capacitor coupled, there would be a low resistance path from the base to the negative supply line, and this would affect the circuit bias conditions. 如果信号源和电路不是用电容耦合而是直接相连,从基极到负电源线就会一个低阻通路,并且这将影响到电路偏置状态 11.The differential amplifier has a high-impedance (constant-current)“tail”to give it a high input impedance and a high degree of common-mode signal rejection. It also has a high-impedance collector (or drain) load, to give it a large amount of signal-voltage gain (typically about 100 dB). 差动放大极有一个高阻抗的“尾巴”(恒流源)以提供高输入阻抗和对共模信号的深度抑制,同时,它还具有一个高阻抗和集电极或漏极负载以提供高的信号电压增益(典型的数据是100dB). 12.On the other hand, a DC negative-logic system, as in Figure 3.6(b), is one which designates the more negative voltage state of the bit as the 1 level and the more positive as the 0 level. 另一方面, 如图3.6(b)所示, 把比特的较低的电压状态记为1电平, 较高的电压状态记为0电平, 这样的系统称为直流负逻辑系统。 13.For example, to represent the 10 numerals (0, 1, 2, …, 9) and the 26 letters of the English alphabet would require 36

10级通信工程专业英语翻译

通信一班序号:28 姓名:粟清明学号:14102301239 JXTA is a crystallization by Sun company's chief scientist Bill Joy's more than twenty years of brewing."JXTA technology is a platform for Network programming and calculation.To solve the modern distribution calculation especially peer-to-peer (Peer to Peer, P2P) in the calculation of the problem". [1] JXTA research project,which will provide a new framework that make the user more convenient to access to connect on the Internet's personal computer resources, thus further expand Internet 's space. At the same time JXTA is also the Sun's "ONE Internet" strategic continuance, and will take a more positive attitude to compete with the .net strategy of Microsoft and Hailstorm plan . JXTA agreement defines a set of six agreement based on XML, the organization of node into node group, release and found some resources, communication and mutual monitoring provides standardized method. (Endpoint Routing Protocol,ERP) is used for node found routing.To send a message to other nodes, and through the potential firewall and connection. (Rendezvous Protocol,RVP) s used for the nodes in the group to spread information.(Peer Resolver Protocol,PRP) is Used to one or more points to send general inquiries, and receive the response of inquiries. (Peer Discovery Protocol, PDP) is used to release and found advertising resources. (Peer Information Protocol, PIP) used to get other nodes state Information. (Peer Binding Protocol, PBP), can let a node with another node or between more nodes to set up virtual communication channel or pipeline. Compared to the nowadays general communication mode .P2P has many advantages, but it also has a lot of problems waiting to be solved.Firstly, each Peer in P2P is an active participant,in order to make the network performance increase, they need more Peer's participation, so that will result in the network's huge, manage this network will is a complex project; Secondly, P2P agreement compares with traditional

管理信息系统中英文翻译资料

Managemengt Information Systems By a management information system,we propose the follow alternate definition: an integrated uer/machine system (usually computerized) for providing information to support decision making in an enterprise. The key elements of this definition are —An integrated uer/machine system —For proving information —To support decision making —In an enterprise A management information system utilizes —Computer hardware and software —Manual procedures —Models for analysis —A database Just as there is a logical flow of materials in the creation of a product, there is logical flow of information in a management information system.In manufacturing,raw materials move through a process that transforms the raw materials into usable products. In a similar fashion, in an information system,data are supplied to a system(input), the data are manipulated(processed),and they are transformed into information(output).In its simplest form ,a management information systemed may be depicted by an input-process-output(IPO) model

选矿专业英语

1 总论 采矿mining 地下采矿underground mining 露天采矿open cut mining, open pit mining, surface mining 采矿工程mining engineering 选矿(学)mineral dressing, ore beneficiation, mineral processing 矿物工程mineral engineering 冶金(学)metallurgy 过程冶金(学)process metallurgy 提取冶金(学)extractive metallurgy 化学冶金(学)chemical metallurgy 物理冶金(学)physical metallurgy 金属学Metallkunde 冶金过程物理化学physical chemistry of process metallurgy 冶金反应工程学metallurgical reaction engineering 冶金工程metallurgical engineering 钢铁冶金(学)ferrous metallurgy, metallurgy of iron and steel 有色冶金(学)nonferrous metallurgy 真空冶金(学)vacuum metallurgy 等离子冶金(学)plasma metallurgy 微生物冶金(学)microbial metallurgy 喷射冶金(学)injection metallurgy 钢包冶金(学)ladle metallurgy 二次冶金(学)secondary metallurgy 机械冶金(学)mechanical metallurgy 焊接冶金(学)welding metallurgy 粉末冶金(学)powder metallurgy 铸造学foundry 火法冶金(学)pyrometallurgy 湿法冶金(学)hydrometallurgy 电冶金(学)electrometallurgy 氯冶金(学)chlorine metallurgy 矿物资源综合利用engineering of comprehensive utilization of mineral resources 中国金属学会The Chinese Society for Metals 中国有色金属学会The Nonferrous Metals Society of China 2 采矿 采矿工艺mining technology 有用矿物valuable mineral 冶金矿产原料metallurgical mineral raw materials 矿床mineral deposit 特殊采矿specialized mining 海洋采矿oceanic mining, marine mining 矿田mine field

通信与信息工程英语教程翻译

A business survives and thrives on information: information within the organization and information changed with suppliers, customers,and regulators. Moreover, the information needs to be consistent, accessible, and at the right location. We consider information in four forms-voice, data, image, and video-and the implications of distributed requirements. The term voice communications refers primarily to telephone related communications. By far the most common form of communication in any organization and for most personnel is direct telephone conversation. The telephone has been a basic tool of business for decades. Telephone communications has recently been enhanced by a variety of computer-based services, including voice mail and computerized telephone exchange systems. V oice mail provides the ability to send, forward , and reply to voice messages nonsimultaneously , and it has become a cost-efficient tool even for many midsize organizations. It provides saving on answering machines and services as well as more responsive service to customers and suppliers. Advances have also been made in computerized telephone exchange systems, including in-house digital private branch exchanges(PBX) and Centrex systems provided by the local telephone company. These new systems provide a host of features, including call forwarding, call waiting, least-cost routing of long-distance calls, and a variety of accounting and auditing features. The term data communications is sometimes used to refer to virtually any form of information transfer other than voice. It is sometimes convenient to limit this term to information in the form of text(such as reports, memos, and other documents) and numerical data(such as accounting files). The rapid changes in technology have created fresh challenges for management in making effective use of data communications. We will briefly outline the changes in technology in transmission, networks, and communications software that present the manager with new powerful business tools but also the necessity of making choices among complex alternatives. 一个企业生存和蓬勃发展的信息:在改变与供应商,客户和监管机构的组织和信息的信息。此外,对信息的需求是一致的,访问,并在合适的位置。我们认为,在四种形式的语音,数据,图像,视频和分布式需求的影响的信息。 长期的语音通信,主要是指以电话相关的通讯。迄今为止最常见的沟通形式中的任何组织和大多数工作人员是直接的电话交谈。电话已几十年来的基本的业务工具。电话通讯最近已加强各种以计算机为基础的服务,包括语音邮件和程控电话交换系统。语音信箱提供的能力,发送,转发和回复语音邮件nonsimultaneously,它已成为一个成本效益的工具,甚至许多中小型组织。提供节省答录机和服务,以及更快捷的服务客户和供应商。程控电话交换系统,包括内部数字专用分支交换机(PBX)和本地电话公司提供的Centrex系统也取得了进展。这些新系统提供主机的功能,包括呼叫转接,呼叫等待,长途电话的最低成本路由,各种会计和审计功能。 长期的数据通信有时被用来指几乎任何其他信息传输比语音形式。有时可以很方便限制这个术语在文本形式的信息(如报告,备忘录和其他文件)和数字数据(如会计档案)。已创建管理新的挑战,在有效地利用数据通信技术的迅速变化。我们将简要概述在传输技术的变化,网络和通信软件,经理提出新的强大的商业工具,但也使复杂的替代品之间的选择的必要性。

信息管理专业英语 unit1-12 单词以及句子翻译

专业英语 一、专业术语 RFID射频识别IOT物联网Cloud Computing云计算ANN神经网络BI商业智能E-business /Web-business / e-commerce电子商务KM知识管理GIS地理信息系统PDA掌上电脑Bluetooth蓝牙技术CAD计算机辅助设计CMD计算机辅助制作branch manager部门经理binary format二进制格式USB(Universal Serial Bus)通用串行总线computer case计算机机箱 temporary storage of information临时存储信息floppy disk软盘CD-ROM只读光盘textual源代码video card视频卡,显卡sound card音频卡,声卡 DVD数字化视频光盘SISP战略信息系统计划Project Management项目管理Human Resources人力资源End-User Systems Development最终用户系统开发rolling business plans流动业务计划MIS(management information system)管理信息系统DB(database)数据库DBMS(database Management system)数据库管理系统DSS(decision support system)决策支持系统operational manager运营经理Senior manager 高级经理semi-structured decision半结构化决策 ANS(Advanced Network&Service)高级网络及服务公司 TPS(Transaction Processing systems)事务管理系统 KWS(Knowledge Work Systems)只是工作系统GRASP绘制机器人技术应用软件包OAS(Office Automation Systems)办公自动化系统 ESS(Executive Support Systems)经理支持系统 EIS(Executive Information Systems)经理信息系统 OLAP(on-line analytical processing)联机分析处理 GIS(Group Information Systems)集群信息系统 GDSS(Group Decision Support Systems)集群决策支持系统 MIT(Management Information technology)管理信息技术 RAD(rapid application development)快速应用开发 Two-way communications 双工通讯client-server environment 客户服务环境Data warehouse 数据仓库logistics information systems 物流信息系统 ERP(Enterprise resource planning)企业资源规划 CRM(customer relationship Management)客户关系管理 OOD(Object-Oriented design)面向对象设计 OOP(Object0Oriented Programming)面向对象编程 HLLs(High Level Languages)高级语言ADTs(Abstract Data Types)抽象数据类型Software Ics软件的组成单元machine code机器码op-code输出码 EDI(Electronic Data interchange)电子数据交换 SMEs(small and medium sized enterprises)中小企业 B2B企业对企业电子商务B2C企业对用户电子商务 CERT(Character Error Rate Tester)字符出错率测试器 CIAS(Communication Link Analyzer System)通信链路分析系统 IMS(Information Management System)管理信息系统 NDMS(Netware Data Management System)网络数据管理系统

电子信息与通信工程专业英语课文翻译3.1

信号系统和信号处理 陈武0830010209 信号与系统的概念出现在广阔的范围内,在科学技术的不同领域,如通信、航空航天、电路设计、声学、地震学、生物医学工程、发电和输电系统,化学过程控制和语音处理中都离不开这个概念的思想与技术。它在科学技术中发挥了重要作用。在这篇文章,我们简单地介绍连续、离散的信号和系统的数学表示,和信号能量和功率的概念。 1.时间连续和时间离散信号 信号可以描述广泛的无理现象,尽管信号可以用很多方法表示,但在所有的方法中,信号中的信息都包含在一组不同形式的变量中,例如,假设图3-1是一个简单的电路,这是,时域上的电源和电容电压。Vs和Vc就是信号的例子。 在数学上,信号是一个或多个自变量的函数。例如,语音在数学上可以表示成声音压力关于时间的函数;一张图可以表示成亮度关于两个空间变量的函数。尽管在一些特殊的运用中不是描述时间的,为了方便起见,我们一般用时间作变量;例如,在地理学,是用信号描述变量为物理特征程度来研究地球结构,如米芾、多孔性、和电阻性。同样地,在气象调查中,知道空气压力、湿度和海拔风速的变量是极其重要的。图3-2描绘一个典型的年度平均纵向风剖面关于高度的函数。海拔风速这个测量变量是用来核对天气类型的,同时,风状态可能影响直升机的最终到达和降落。 在这篇稳重,我们将要考虑两种不同类型的信号:时间连续信号和时间离散信号。时间连续的信号,自变量是连续的,因此这些信号被定义成值为连续的自变量。相反地,离散时间信号被定义成离散,因此,对这些信号来说,自变量智能取一系列离散的值。关于时间和气压,光宇海拔的函数——语音信号,就是时间连续信号的例子。图3-3所描述的道琼斯的周股票市场索引就是时间离散信号的例子。 为了区别时间连续和时间离散信号,我们一般符号t来表示时间连续的自变量,用n来表示时间离散的自变量。另外,对于时间连续信号,我们用圆括号(·)来围住自变量;然而,对离散信号,我们是用方括号[·]来围住自变量。在很多场合,用图像表示变量也是很有用的。在图3-4展示了连续信号和离散信号的图像表示法。很有必要注意的是,离散信号的自变量智能定义整数值。 2.时间连续和时间离散系统 物理系统最直观的感觉就是,元器件、设备和子系统的互连。在信号处理和通信,机电马达,电动车,化学加工厂中,系统可以视为一个处理,在这里,以某种方法,信号会被系统传输或引起系统相应,从而产生其他信号作为输出。例如,一个高保真系统记录音频信号并重放这信号。如果这高保真系统有音调控制,我们可以改变所播放的声音的质量。同样地,图3-1可以视为一个带输入电压Vs(t)和输出电压Vc(t)的系统。一个图像增强系统将输入图像转化成所期望的输出图像,例如增强对比度。 一个时间连续系统是输入连续信号得到连续输出信号的系统。例如图3-5a所描绘的,在这里,x(t)是输入,y(t)是输出,h(t)是系统脉冲相应。同样地,时间离散系统是一个输入离散,得到离散输出的系统,如图3-5b所描绘的,在这里,x(n)是输入,y(n)是输出,h(n)是系统单位抽样相应。 我们可以通过抽样定理使时间连续和时间离散系统相结合。我们可以开发时间离散系统来处理已被抽样的时间连续信号。目前,很多数字信号处理方法已用在科学和技术领域。所以,我们取数字信号系统为例,它的一些系统特性将在下一部分描述。 3.一些数字信号系统的特性 一般来说,一个系统通过转化函数讲输入信号x(n)映射成Y(n)这个系统定义是

信息管理与信息系统专业英语Unit1~6 TextB 课文翻译

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