电子信息专业英语
为了测量电阻，我们使用单位“欧姆”。To measure resistance,we use the unit "ohm".
重要的是要应用这些定律。It is important to apply these laws. 这种装置能用来测量电流电压电阻。Such a device can be used to measure
current,voltage and resistance. 我们想要求这个电流中的电流。We wish to find the current in the circuit.
无线电波的用途之一是发送信息。One of the uses of radio waves is to transmit intelligence.
在这种情况下该物体被说成带电了。In this case the object is said to be charged.
我们感到理解这个概念很困难。We find it very difficult to understand this concept.
工科学生应该知道如何使用计
算机。Engineering students
should know how to use a
computer.
物体做工的能力被称为能量。
The ability of a body to do work
is called energy.
重要的是我们要把理论应用于
实践。It is important for us to
apply theory to practice.
计算在这个电流中流动的电流
密度是可能的。It is possible to
calculate the current flowing in
this circuit.
这些是常用的设备。These are
commonly used devices.
电压等取决于电路中的电阻以
及所加的电压。Voltage equals
current multiplied by
resistance.
显然电流与外加电压成正比。It
is apparent that current is
proportional to the applied
voltage.
人们发现的金属都是良导体。It
has been found that metals are
all good conductors.
该机器的效率取决于它能运转
多快。The efficiency of the
machine depends on how fast
it can run.
你知道电位差是什么吗？Do
you know what the potential
difference is?
正如我们将会看到的那样，速度
是一个矢量。As we shall
see,velocity is a vector.
这些仪器正是我们需要的。
There instruments are just
what we need.
导线中的电子绝不能从正流向
负。By no means do electrons
in a wire flow from the positive
to the negative.
所有物质，不论是水、铁还是空气，都是由原子构成的。Every substance,be it water,iron or air,consists of atoms.
(1) 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耦合，从基极到负电源线就会有一个低阻通路，并且这将影响到电路偏置状态
(2) A conventional operational amplifier (op-amps) can be simply described as a
high-gain direct-coupled voltage amplifier that has a single output terminal, and because it has both inverting
and non-inverting input
terminals, the device can
function as an inverting,
non-inverting, or differential
amplifiers, filters, oscillators,
level switches, comparators,
etc. 传统的运算放大器
(op-amps)可以被简单的描述为
一个高增益使电压放大器,优点
有一个输出端,因为它既有反向
和用户的输入端子,设备能作为
一个反向功能,用户,或差分放大
器、滤波器、振荡器、液位开关、
比较器等。
(3) 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). (3)微
分放大器有一个高祖抗(恒
流)“尾巴”给它一个高输入阻抗
及高度的共模信号的排斥反应。
它也有一个高祖抗收集器(或排
放)负荷,给它一个大量的
signal-voltage增益(通常大约
100分贝)。
(4) In that circuit, a fixed
reference voltage is fed to the
non-inverting terminal.
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. 电路、固定的参考电压反馈到用户的终端。因为非常高电压增益的放大器的开环,输出驱动转化为积极的饱和度(接近+ V)当样品是略高于电压参考电压,并被推入负面饱和度(接近-V)电压略低于样品去参考电压。
(1) For example, to represent the 10 numerals (0, 1, 2, …, 9) and the 26 letters of the English alphabet would require 36 different combinations of 1’s and 0’s. Since 25<36<26, then a minimum of 6 bits per bite are required in order to accommodate all the alphanumeric characters. (2) Furthermore, ripple or voltage spikes may exist in the power supply or ground leads, and other sources of unwanted
signals, called noise, may be
present in the circuit.
(3) For these reasons the
digital levels are not specified
precisely, but as indicated by
the shaded region in Figure 3.6,
each state is defined by a
voltage range about a
designated level, such as 41 V
and 0.20.2 V.
(4) At 1 signifies the existence
of a positive pulse in a dynamic
positive-logic system; a
negative pulse denotes a 1 in a
dynamic negative-logic system
a 0 at a particular input (or
output) at a given instant of
time designates that no pulse
is present at that particular
moment.
1)例如,代表10数字(0、1、2、
9、…)和26个字母需要36不同的
组合,“1”和“0”。自从25 < 36 < 26,
那么至少6位要求每一口为了适
应所有的字母数字字符。
(2)此外,波纹或电压尖峰可能存
在的电源或地面商机,其它来源
的无用的信号,称为噪音,可能出
现在这条赛道。
(3)对这些原因是没有指定的数
字水准仪清楚,但所示的阴影区
域图3.6中,每个国家都被定义为
一个关于一个指定层次电压范
围,如41伏特和0.20.2 V。
(4)在1表示存在一种积极的脉冲
在动态positive-logic系统、负脉
冲代表一个1日在系统动态
negative-logic 0在某一特定的
输入(或产量)在一个特定的瞬间
表示无脉搏是目前在那个时刻。
(1) It is assumed that the
reader has a general
knowledge of circuit theory. (2)
Which of these methods is determine Reqdepends upon which is the easiest in any given situation.
(3) It is an experimental fact that an electric field is established in a conducting rod when there is a temperature difference between its ends. (4) That this condition is sufficient is obvious.
(5) It can be shown that any rational function of sin xand cos xcan be integrated.
(6) A major advantage of this device is that it operates continuously.
(7) In this chapter we shall determine which load receives the maximum power for a given practical voltage source.
1)它是假定读者的普遍知识的电路理论。(2)哪个是
Reqdepends这些方法的确定上
是最简单的在任何给定的情况。
(3)这是一个电场的实验事实成
立于导电杆当有一个头温差。(4)
这个条件是足够的是很明显的。
(5)它可以发现任何有理函数的
xand因为xcan罪是完整的。(6)
的一个主要优势,该设备是连续
作业。
(7)在这一章,我们应确定其中负
载收到最大功率对于一个给定
的实际电压源。
(1) These capacitors are
commonly used where change
in capacitance is necessary.
(2) The advent of electronics is
reckoned from the discovery
that the current in a vacuum
diode can be controlled by
introducing a third electrode.
(3) The concept of work is so
important that it will bear
further discussion.
(4) Just as good electrical
conductors are also good
conductors of heat, poor
electrical conductors are also
poor thermal conductors.
(5) By the use of electrical
insulators, electrical currents
can be confined to well-
designed paths in good
electrical conductors, while it is
impossible to confine heat
currents to a comparable
extent.
(6) The statement that a man
weighs 160 pounds is
equivalent to a statement that
he is attracted by the earth with
a force of 160 pounds.
这些电容器(1)常用在电容变化
是必要的。(2)的出现,从电子被
发现,当前在真空二极管可以控制引入第三电极。(3)工作的概念是如此的重要,它将承担进一步的讨论。(4)一样好也良导体电导体的热量,贫穷也可怜的电导体热导体。(5)采用绝缘体,电流可以只限于 ——设计好电导体的路径,而不可能限制热量电流相当的程度。(6)声明,一个人重160磅,相当于一个声明他是受到地球的吸引以一种力160英镑。
第三单元
模拟电路analog circuit 集成电路integrated circuit 共射级电路common emitter circuit负载电阻load resistor 短路short circuit amplifiers运算放大器op-amps 差分放大器differential amplifier 同相输入端电压the voltage at the non-inverting input反相输入端电压the voltage at the inverting input 二进制方式binary manner低电压low voltage 数字系统digital system 逻辑功能logic functions 十进制decimal system 直流负载逻辑系统a DC negative-logic system 脉冲逻辑pulse-logic动态正逻辑系统 a dynamic positive-logic system
第六单元真空三极管triode vacuum tube
纠错编码error-correction code
视线传播los propagation 电离
层ionospheric reflection 反射多
路通信系统multiplexed system
奇偶校检位parity bit 频率配置
frequency assignment 频率的整
体规划扩the overall frequency
扩频系统spread spectrum
system 高清晰度电视
HDTV(high definition television)
带通信号bandpass signal 单边
带single sideband(SSB)国际电
信联盟ITU(international
telecommunications union)业余
无线电amateur radio 信噪比
signal-to-noise
抽样、量化与编码sampling,
quantizing and coding 幅值
amplitude value抽样速率
sampling rate 重复率repetition
rate 模拟信号analog signal 含
噪声的环境noisy environment
信号电平signal levels 反向操
作reverse operation 同步字
synchronization word
Binary-coded number二进制编
码数Hi-Fi 高保真度
electromagnetic induction 电磁
感应ADC模\数变换器VLSI
超大规模集成block diagram
方框图PSK 相移键控discrete
signal时间离散分布的信号
PTN 公用电信网络a full array
全方位的，全面的amplitude
modulation(AM) 幅度调制
negative-feedback amplifier负反
馈放大器PCM（Pulse-code
Modulation）脉冲编码调制
time-division multiplexing(TDM)
时分多路adaptive equalization
自适应均衡random access
memory(RAM)随机存取存储器
ISDN(Integrated Services Digital
Network ) 综合业务数字网
Los propagation视线传播
电子信息专业英语复习资料
电子信息专业英语复习资料 一、基本术语（英译汉） 1.probe探针 2.real time operational system 实时操作系统 3.debugger 调试器 4.sourse code 源代码 5.software radio wireless LAN 软件无线电网络 6.base station 基站 7.top-down approach 自顶向下分析法 8.variable 变量 9.data compress 数据压缩 10.signal conditioning circuit 信号调理电路 11.Chebyshev Type Ⅰfilter 切比雪夫Ⅰ型滤波器 12.vertical resolution 垂直分辨率 13.device driver 设备驱动 https://www.360docs.net/doc/5114708516.html,piler 编译器 15.template 模板 16.concurrent process 并发进程 17.object recognition 目标识别 18.Discrete Time Fourier Transform 离散傅立叶变换 https://www.360docs.net/doc/5114708516.html,bined circuit 组合逻辑电路 20.impedance transform 阻抗变换器 21.voltage source 电压源22.passive component 无源器件 23.quality factor 品质因数 24.unit-impulse response 单位脉冲响应 25.noise origin 噪声源 26.Domino effect 多米诺效应 27.output load 输出负载 28.cordless phone 无绳电话 29.Antenna 天线 30.harmonic interference 谐波干涉 31.Parallel Resonant 并联谐振 32.voltage control oscillator 压控振荡器 33.adaptive delta modulation 自适应增量调制 34.amplitude modulation 调幅 二、缩略语（写出全称） 1.LSI：large scale integration 2.PMOS ：p-type metal-oxide semiconductor 3.CT：cycle threshold 4.MRI：magnetic resonance imaging 5.ROM：read-only memory 6.DRAM ：dynamic random access memory 7.TCXO ：temperature compensated X'tal (crystal) Oscillator https://www.360docs.net/doc/5114708516.html,B：Universal Serial Bus 9.DCT：discrete cosine transform
电子信息工程专业英语B篇译文
果粒橙 图解:译文“蓝色” Unit 6 The Principle of PCM PCM原理 Pcm is dependent on three separate operations, sampling, quantizing, and coding. Many different schemes for performing these three functions have evolved during recent years, and we shall describe the main ones. In these descriptions we shall see how a speech channel of telephone quality may be conveyed as a series of amplitude values, each value being represented, that is, coded as a sequence of 8 binary digits. Furthermore, we shall prove that a minimum theoretical sampling frequency of order 6.8 kilohertz(khz) is required to convey a voice channel occupying the range 300 HZ to 3.4 Khz. Practical equipments, however, normally use3 a sampling rate of 8 khz, and if 8-digits per sample value are used, the voice channel becomes represented by a stream of pulses with a repetition rate of 64khz. Fig .1-1 illustrates the sampling, quantizing, and coding processes. PCM的构成依赖于三个环节，即采样、量化和编码。近年来，人们对这三个环节的实现提出了许多不同的方案，我们将对其中的一些主要的方案进行讨论。在这些讨 论中，我们会看到话路中的语声信号是如何转换成幅值序列的，而每个幅值又被编码，即以8位二进制数的序列表示。而且，我们将证明，为了转换频率范围为300HZ— 3.4KHZ的话路信号，理论上最小采样频率须为6.8khz。但是，实际设备通常用8khz 的采样速率，而如果每个样值用8位码的话，则话路是由一个重复速率为64khz的脉 冲流来表示的。图1-1表示了采样、量化、编码的过程。 Reexamination of our simple example shows us that the speech signal of maximum frequency 3.4khz has been represented by a signal of frequency 64khz. However, if only 4-digits per sample value had been used, the quality of transmission would drop, and the repetition rate of the pulses would be reduced to 32khz. Thus the quality of transmission is dependent on the pulse repetition rate, and for digital communication systems these two variables may be interchanged most efficiently. 让我们再研究一下上面提到的简单例子。可以看出，最高频率为3.4khz的话音信号适用64khz的（脉冲流）信号来表示的。但是，如果每个样值中用4位（码）表示，则传输质量会下降，而脉冲的重复速率也将减小到32khz。因而传输质量是取决于脉 冲重复速率的。对于数字通信系统，这两个量之间极明显的互相影响着。 Digital transmission provides a powerful method for overcoming noisy environments. Noise can be introduced into transmission patch in many different ways : perhaps via a nearby lightning strike, the sparking of a car ignition system, or the thermal low-level noise within the communication equipment itself. It is the relationship of the true signal to the noise signal, known as the signal-to-noise ratio, which is of the most interest to the communication engineer.Basically, if the signal is very large compared to the noise level, then a perfect message can take place; however, this is not always the case. For example, the signal received from a
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。
电子信息工程专业英语作业3
Lesson eight 第八课 Ⅱ.翻译句子，并注意remain和above的词类和词义 2. In this case the voltage applied must remain unchanged. 在这种情况下，那个应用电压必须保持不变 4. If you take 3 from 8, 5 remain. 如果从8中拿走3，剩5. 6. The above property was discovered by Faraday. 法拉第发现以上性质。 8. Lenz states that the self-induced emf impedes any change of current and tends to support the former current value. The above is known as Lenz’s law. 楞茨陈述自感电动势阻止电流的变化而保持先前电流的值。上面就是我们所知的楞 次定律。 Ⅲ.翻译句子，注意some的词义 2. That radio receiver weighs some five kilograms. 那个无线接收器重五公斤。 4. Some element in the substance is not known. 物质中的一些元素是人们不知道的。 Ⅳ.翻译句子，注意句中one 的不同用法和词义。 2. This concept was discussed in Chapter One. 这个概念在第一张讨论过。 4. No one can lift this equipment. 没人能举起这件设备。 6. This chapter will deal with one of the three functions of a turning circuit. 这章我们将介绍螺旋电路三个功能中的一个。 8. Before one studies a system, it is necessary to define and discuss some important terms. 在研究一个系统之前，确定且讨论一些重要的术语是有必要的。 Ⅴ.画出句中的名词从句，说明其种类，并将句子译成汉语。 2. These experiments do not show which particles. 这些实验不能显示他们的粒子结构。 4. The operating point is determined by how much bias is used. 操作要点是被用多少偏压决定的。 6. It is not important how this voltage is produced. 这个电压是怎么产生的并不重要。 8. It may be questioned whether this approach is the best for the physicist. 这种方式最适合于医生可能会被质疑。 10. This ball may be used to determine whether that body is charged. 这个球可能用于检测是否身体是带电的。 12. It is known that charged particles emit electromagnetic waves whenever they are accelerated. 众所周知的当电子被加速他们就会发射电磁波。 14. The value of this factor determines how fast the amplitude of the current
电子信息工程专业英语词汇(精华整理版)
transistor n 晶体管 diode n 二极管semiconductor n 半导体 resistor n 电阻器 capacitor n 电容器 alternating adj 交互的 amplifier n 扩音器，放大器integrated circuit 集成电路 linear time invariant systems 线性时不变系统voltage n 电压，伏特数 tolerance n 公差；宽容；容忍condenser n 电容器；冷凝器dielectric n 绝缘体；电解质electromagnetic adj 电磁的 adj 非传导性的 deflection n偏斜；偏转；偏差 linear device 线性器件 the insulation resistance 绝缘电阻 anode n 阳极，正极 cathode n 阴极 breakdown n 故障；崩溃 terminal n 终点站；终端，接线端emitter n 发射器 collect v 收集，集聚，集中insulator n 绝缘体，绝热器oscilloscope n 示波镜；示波器 gain n 增益，放大倍数 forward biased 正向偏置 reverse biased 反向偏置 P-N junction PN结 MOS（metal-oxide semiconductor）金属氧化物半导体 enhancement and exhausted 增强型和耗尽型 integrated circuits 集成电路 analog n 模拟 digital adj 数字的，数位的horizontal adj, 水平的，地平线的vertical adj 垂直的，顶点的amplitude n 振幅，广阔，丰富attenuation n衰减；变薄；稀薄化multimeter n 万用表 frequency n 频率，周率 the cathode-ray tube 阴极射线管 dual-trace oscilloscope 双踪示波器 signal generating device 信号发生器 peak-to-peak output voltage 输出电压峰峰值sine wave 正弦波 triangle wave 三角波 square wave 方波 amplifier 放大器，扩音器 oscillator n 振荡器 feedback n 反馈，回应 phase n 相，阶段，状态 filter n 滤波器，过滤器 rectifier n整流器；纠正者 band-stop filter 带阻滤波器 band-pass filter 带通滤波器 decimal adj 十进制的，小数的hexadecimal adj/n十六进制的 binary adj 二进制的；二元的octal adj 八进制的 domain n 域；领域 code n代码，密码，编码v编码 the Fourier transform 傅里叶变换 Fast Fourier Transform 快速傅里叶变换microcontroller n 微处理器；微控制器assembly language instrucions n 汇编语言指令 chip n 芯片，碎片 modular adj 模块化的；模数的 sensor n 传感器 plug vt堵，塞，插上n塞子，插头，插销coaxial adj 同轴的，共轴的 fiber n 光纤relay contact 继电接触器 single instruction programmer 单指令编程器 dedicated manufactures programming unit 专 供制造厂用的编程单元 beam n （光线的）束，柱，梁 polarize v（使）偏振，（使）极化 Cathode Ray Tube（CRT）阴极射线管 neuron n神经元；神经细胞 fuzzy adj 模糊的 Artificial Intelligence Shell 人工智能外壳程序 Expert Systems 专家系统 Artificial Intelligence 人工智能 Perceptive Systems 感知系统 neural network 神经网络 fuzzy logic 模糊逻辑 intelligent agent 智能代理 electromagnetic adj 电磁的 coaxial adj 同轴的，共轴的 microwave n 微波 charge v充电，使充电 insulator n 绝缘体，绝缘物 nonconductive adj非导体的，绝缘的 antenna n天线；触角 modeling n建模，造型 simulation n 仿真；模拟 prototype n 原型 array n 排队，编队 vector n 向量，矢量 wavelet n 微波，小浪 sine 正弦cosine 余弦 inverse adj倒转的，反转的n反面；相反v 倒转 high-performance 高精确性，高性能 two-dimensional 二维的；缺乏深度的 three-dimensional 三维的；立体的；真实的 object-oriented programming面向对象的程序 设计 spectral adj 光谱的 attenuation n衰减；变薄；稀释 distortion n 失真，扭曲，变形 wavelength n 波长 refractive adj 折射的 ATM 异步传输模式Asynchronous Transfer Mode ADSL非对称用户数字线Asymmetric digital subscriber line VDSL甚高速数字用户线very high data rate digital subscriber line HDSL高速数据用户线high rate digital subscriber line FDMA频分多址(Frequency Division Multiple Access) TDMA时分多址(Time Division Multiple Access) CDMA同步码分多址方式(Code Division Multiple Access) WCDMA宽带码分多址移动通信系统(Wideband Code Division Multiple Access) TD-SCDMA(Time Division Synchronous Code Division Multiple Access)时分同步码分多址 SDLC(synchronous data link control)同步数据 链路控制 HDLC(high-level data link control)高级数据链路 控制 IP/TCP(internet protocol /transfer Control Protocol)网络传输控制协议 ITU (International Telecommunication Union) 国际电信联盟 ISO国际标准化组织（International Standardization Organization）； OSI开放式系统互联参考模型（Open System Interconnect） GSM全球移动通信系统（Global System for Mobile Communications） GPRS通用分组无线业务(General Packet Radio Service) FDD(frequency division duplex)频分双工 TDD(time division duplex)时分双工 VPI虚路径标识符（Virtual Path Identifier）； ISDN（Integrated Services Digital Network）综 合业务数字网 IDN综合数字网（integrated digital network） HDTV (high definition television)高清晰度电视 DCT(Discrete Cosine Transform)离散余弦变换 VCI(virtual circuit address)虚通路标识 MAN城域网Metropolitan area networks LAN局域网local area network WAN广域网wide area network 同步时分复用STDM Synchronous Time Division Multiplexing 统计时分复用STDM Statistical Time Division Multiplexing 单工传输simplex transmission 半双工传输half-duplex transmission 全双工传输full-duplex transmission 交换矩阵Switching Matrix 电路交换circuit switching 分组交换packet switching 报文交换message switching 奇偶校验parity checking 循环冗余校验CRC Cyclic Redundancy Check 虚过滤Virtual filter 数字滤波digital filtering 伪随机比特Quasi Random Bit 带宽分配Bandwidth allocation 信源information source 信宿destination 数字化digitalize 数字传输技术Digital transmission technology 灰度图像Grey scale images 灰度级Grey scale level 幅度谱Magnitude spectrum 相位谱Phase spectrum 频谱frequency spectrum 智能设备Smart Device 软切换Soft handover 硬切换Hard Handover 相干检测Coherent detection 边缘检测Edge detection 冲突检测collision detection 业务集合service integration 业务分离/综合service separation/ integration 网络集合network integration 环形网Ring networks 令牌环网Token Ring network 网络终端Network Terminal 用户终端user terminal 用户电路line circuit 电路利用率channel utilization（通道利用率） 相关性coherence 相干解调coherent demodulation 数字图像压缩digital image compression 图像编码image encoding 有损/无损压缩lossy/lossless compression 解压decompression 呼叫控制Call Control 误差控制error control 存储程序控制stored program control 存储转发方式store-and-forward manner 语音\视频传输voice\video transmission 视频点播video-on-demand(VOD) 会议电视Video Conference 有线电视cable television 量化quantization 吞吐量throughput 话务量traffic 多径分集Multipath diversity 多媒体通信MDM Multimedia Communication 多址干扰Multiple Access Interference 人机交互man machine interface 交互式会话Conversational interaction
信息工程专业英语课程论文
鲁东大学信息与电气工程学院2015 －2016 学年第-----2----学期 《 专业英语 》课程论文 课程号： 220821071 任课教师 贾世祥 成绩 论文题目：专业科技论文翻译 对给定的发表在正规外文期刊上的电子信息类专业科技论文进行翻译，包含 Title 、Introduction 、Algorithm 、Result 、Discussion 、Reference 等内容。 论文要求：（对论文题目、内容、行文、字数等作出判分规定。） 1.论文格式参考学院学士毕业论文要求，要有题目、摘要、关键字、正文、参考文献。 2.原文不包含摘要和关键字，请阅读原文并写出200~300字的英文摘要，给出5个英文关键字。 3.语言表达流畅，涉及到的图表字迹清晰，公式使用公式编辑器编辑。 4.设计报告使用B4纸打印，正文的图表可黑白打印。 教师评语： 教师签字： 年 月 日 一个简单、快速、有效的多边形减面算法 Stan Melax Abstract ：This article describes a new type of 3D model to optimize the reduction surface algorithm. Previous algorithms although it can reduce operating surface, but it in the reduction process will generate a lot of only makes processing speed becomes slow excess facet. This new algorithm is mainly through the edge collapse operation to achieve the effect of reducing the surface. This paper explains the characteristics and advantages of this algorithm by means of examples. The advantages and disadvantages of the new algorithm are also analyzed. Our initial goal is simple: we want to find a method can be reduced due to excessive blasting effects of polygons, now our art personnel only need to create a detailed model for every game objects. But there are limitations, this algorithm can only be applied to the triangle, if you need to be able to other more edges of the polygon into a simple triangle, in addition to this there is no other restrictions on the. Keywords ：Polygon reduction ；Edge Collapse ；Pretreatment ；Optimization model ；Optimization model; Application algorithm ； 如果你是一个游戏开发者，那么3D 多边形模型非常有可能是日常生活中的一部分，而且你对多少个多边形每秒、少多边形建模、细节层次等概念非常熟悉。你可能知道多边形减面算法的 目的在于通过一个有着大量多边形的高细节的模型生成一个 多边形数量比它少、但是看起来却跟原模型很相像的低面模型。这篇文章解释了一种实现自动减面的方法，并且附带的讨论了多边形减面的有用之处。在我们开始之前，我建议你去下载我的一个程序：BUNNYLOD.EXE ，它展示了我将要阐述的这项技术。你可以在Game Develop 网站上找到它。 问题的由来 在深入这个很厉害的3D 算法之前，你可能会问你自己真的有必要关注它吗？要知道，已经有一些商业的插件和工具来为你减少多边形数量了。 然而，下面的几条理由会告诉你为什么需要实现自己的减面算法： 学院 信息与电气工程学院 专业 信息工程 班级 信息1301班 本 学号 20132213652 20132213664 姓名 李惠梁 吴海峰
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 different combinations of 1’s and 0’s. Since 25<36<26, then a minimum of 6 bits per bite are required in order to accommodate all the alphanumeric characters. 例如，要表示0～9十个数字和英文字母表中的26个字母，就需要0和1的36种不同的组合。因为25<36>26,