电子与通信专业英语第二版李霞 单词
电子与通信技术专业英语Unit I-2
对电流的阻力叫电阻, 用字母符号R表 示。电阻的单位是欧姆，常用Ω表示。1欧 姆的定义是：当加到导体上的电压为1伏特 时，将导体中的电流限制为1安培所需的电 阻值。较大的电阻值常用千欧( kΩ )和兆欧 （MΩ）表示。
The relationship between volts, amperes, and ohms can be represented by “ Ohm‟s Law”. Ohm‟s Law states that the ratio of the voltage between the ends of a wire and the current flowing in it is equal to the resistance of the wire. Now, we can say that when a given voltage is applied across the ends of the wire, an electric current always flows along it, and the value of this current depends on the resistance of wire (as shown in fig.2-1).
伏特、安培和欧姆之间的关系可用欧姆 定理表示。欧姆定律描述为：导线两端电 压与流过导线的电流的比是导线的电阻。 现在我们可说，当在导线两端施加一定电 压时，导线中总是有电流，电流的值取决 于导线的电阻（如图2-1所示）。
Exercises
1.Write T (true) or F (false) beside the following statements about the text.
电压这个术语（用字母符号U表示）常 用来表示电位差和电动势。度量电压的单 位是伏特。使1安培电流流过电阻为1欧姆 的导体所需的电动势定义为1伏特。
电子与通信专业英语-电子工业出版社-李霞翻译
电子与通信专业英语-电子工业出版社-李霞翻译Unit 13（1）微积分在解析几何的帮助下，被证明能够有效的解决许多早先无法解决的问题。
（2）在17世纪的许多重大数学发明中，毫无疑问最杰出的就是微积分。
（3）当法国数学家奥古斯丁*路易斯*柯西发展相互一种可接受的极限理论，并由此定义了连续性，微分和极限概念下的定积分，这成为1821 年数学史上的巨大飞跃。
4）数学分析是高等数学中的最重要分支中的一个，它的主要目的是研究变量和他们之间的关系。
5）自然数学或技术科学的一个主要目的是建立考虑的过程中的变量之间的关系并用数学描述。
6数学方法是物理学、机械学、工程学和其他自然科学的基础，对所有学科来说，数学是有利的理论和应用工具，没有数学就不可能科学计算工学和技术。
Unit 21）描述精确的随机变量的分析需要许多信息，而且描述两个或以上变量的联合发布需要更多的信息2）二项分布和泊松分布在所有离散分布中应用最广泛的，由于他们的概率分布在统计性质控制中的重要（作用），这种概率分布对工程人员来说是非常重要。
3）对于任何随机变量，在两个点分布函数的差异是随机变量取这两点间（或端点）的值的概率4）一般来说，随机事件的概率P在进行大量的重复实验时能以均值来确定，该事件发生的次数是p 乘以实验次数5）在统计学中，将任何观察过程叫做实验是一个习惯6）如果在特定的现实情况下，某时间确定不能发生，那么称之为不可能事件Unit 34）当运放周围有反馈时，输入阻抗和反馈阻抗的比值决定了电路的闭环增益6）运放是个极为高效和通用的设备，它的应用范围覆盖了广阔的电导工业满足了特殊传输函数，模拟器件，模拟计算和特殊系统设计的需要。
Unit 41）如果一个线性系统的输入是正弦波，输出将也是正弦波，并且输出与输入频率相同。
2）正如我们能将任何信号解释成一系列尺度位移变换的脉冲和一样，我们也能将任何信号分解成一系列不同频率的正弦（尺度和位移变换）的和3）—个信号被公式化成一个包含或多个变量的函数，并用于传达物理现象本质中的信息4）采样定理说明：如果一个连续信号x（t）的最高频率f max,那么如果采样频率f s大于2f max，则x（t）可以由它的采样序列x（nT）完全恢复‘5）事实上，如果离散时间序列是绝对可和的，那么在连续事件情况下，他的光谱就是一个有限且连续的函数。
电子与通信专业英语第二版李霞 课后翻译
y(6> Mathematical methods lie in the foundation of physics, mechanics, engineering and othernatural sciences. For all of them mathematics is a powerful theretical and pratical tool withoutwhich no scientific calculation and no enineering and technology are pssilie
一个信号被公式化成一一个包含或多个变量的函数，并用于传达物理现象本质中的信息
Y(4) Nyquist sampling theorem states that if the highest-frequency componentofa CT signalx(t) is fmax, then x(t) can be recovered from its sampled sequence x(nT) if the sampling frequencyfs is dosldsibeealons maavaenaaomqiamgasuvaon larger than 2fmax.
(4)When feedback is used around an operational amplifier, the closed loop gain of the circuitis
determined by a ratio involving the input and feedback impedances used.
电子通信专业英语单词
通过对…的深
刻了解 deviate from 偏离 deviate 偏离 devices 装置 devoted 投 DFT 离散型福利叶 变换 diagnostic 诊断 diameter 直径 dictate 口授 dielectric constant
结构 circuitry 电路 classified 分类 climate 思潮 clocked 时钟控制 clocked 锁存 clockwise 顺时针 close proximity 接 近 closed-loop 闭合环路 closed-path 闭合路径 closethe relay contact
连续性方程 continuously 持续 continuous-time 时 间上连续 contour 轮廓，等高线 contrast 对比度 contribution 权、重值 contuct 触点 convenient packaging
简易封装 convention 协定，习 俗，习惯 convention 协定 converge 收敛 converted 转换 convolution 卷积 coordinated 协调的, 同等的
conductor 导体 conduit 水管，管道 configuration 结构 conflict 斗争，冲突 consequently 因而 conservation 保持 conservation 守恒 consist of 由……组 成
constant group delay
电子与通信专业英语第二版李霞 课后翻译
active有源的Binomial dist二项式分布conceptual概念的discrete离散的fluctuation波动inflection变形additivity叠加性buffer.缓冲器congestion拥塞discretize使离散的formalism形式infrared红外线的advocate主张者by means of依靠consensus一致同意disperse分散formula公式，规则inherent固有的algebra代数学by-product副产品，出乎意料的结果consist of由什么组成disruptive使破裂的Fourier series傅里叶级数integration积分algorithm算法calculus微积分constituent组成的distort歪曲freak反常的intensity亮度alleviate减轻capacitor电容器contour轮廓distortion扭曲fulcrum杠杆的支点interdisciplinary跨学科的对比度增强distributive分配的fuzzy模糊的interference干扰alphabetical字母的carrier载波contrast enhancemenalternative另一个可选择的cascade串联converge收敛disturbance干扰GaAs砷化镓interpratation说明 解释amendment改善cautery烙convolution卷积DLC数据链路控制gate门intuitive直觉的amplitude振幅CCSA中国通信标准协会coordinate坐标edge边缘generator发生器inverting input反相输入端AMPS高级移动电话系统CD光盘cosine余弦electributive心电图give rise to引起investigate调查，研究antenna天线CDMA码分多址couple耦合electromagnetic电磁的GPRS通用分组无线业务ionosphere电离层aperiodic非周期的CDMA码分多址cumulative累加的electromagnetic电磁的gray level灰度IP互联网协议approximation近似值cellular细胞的curriculum课程emulate模仿ground使接地jeopardize危害arbitrary任意的channel频道cut-off frequency截止频率encapsulate封装harmonic谐波JPEG联合图像专家组argument自变量channel信道decimal part小数部分encoder译码器hemorrhage出血LAN局域网arithmetic算术channelizatio信道化deficiency缺乏 不足encompass包围heterogeneity不同成分latch闭锁artificial intelligence人工智能circuitry电路，线路degradation退化enormous巨大的hierarchical分等级的lay the foundation给。
电子信息英语重点 李白萍
Unit 9Passage A单词：digital signal、real-world、representation、convert…into、analog-to-digital converter、digital-to-analog converter、sample and hold circuit、sampling intervals、sampling period、sampling frequency、band-limited signal、aliasing occurs、low pass filter、acquisition time、quantization level、quantization errors、true sample level、quantization step、zero order hold、undersampling、spectral inversion、microprocessor、without breaking the budget、time to market、power dissipation、price/performance、updated、bus interfaces、glue logic、functional accelerators、rules…out、encumbered with、compatibility、be bound to句子：1、This process......by the code.(113页) 2、Depending on the……of the signal.(113页) 3、Field-Programmable Gate Arrays (FPGA)……fast time to market..(114页) 3、However,for while……all but rules them out.(115页) 3、More and more,these……real time market place.(115 Passage B单词：refers to、integrated circuit、incorporate、printed circuit board、features句子：1、While traditional processors……to access them.(118页) 2、The specific hardware……third party software.(120页) 3、While some of these boards are......such as a personal computer.(121页)Unit 17Passage A单词：resolution、be made up of、gray scale levels句子：1、A digital image is made up of……to that pixel.(204页) 2、When an image uses only……entire available range.(204页) 3、The locations and colors……that are nearest.(205页) 4、One simple compression scheme……additional copies needed.(206页)Passage B单词：significant correlation、principal components、procedure、transformed bands、vector quantization、derived、iterative、decoder、takes…compares、fractal、duplication、moderate 句子：1、A more implemental……for the original image.(209页) 2、There are two general……much better compression.(210页) 3、In image processing,a procedure called......bands are uncorrelated.(210页) 3、The procedure also provides a ……new transformed bands.(210页) 4、Based on Mandelbrot sets ……without regard to rotation and scale.(211页)Unit 19Passage A句子：1、Within a communication system……for the information signal.(227页) 2、The optical carrier may be modulated……than digital modulation.(228页) 3、Figure 19.2 shows a block schematic……noise bandwidth reduction.(228页) 4、Passage B句子：1、At present,the bandwidth……is possible.(233页) 2、（f）、（i）段（234页）Unit 22Passage A句子：1、To keep pace with this……to verify correct operation.(269页)Passage B单词：peripheral、solution、volatility、paced、deep submicron era、facilitate、issues、to the point 句子：1、GA process technology……50,000 gates.(277页) 2、What is fueling the ……ASICs in many applications?(278页)。
电子与通信工程专业英语Unit 2
conductor is one ampere when the voltage applied to the conductor
电阻
假若将电池连接在导电材料上，一定数量的电流将流过此材料，流过材
料的电流取决于电池的电压、材料的截面积和材料自身的电阻率。对电流的
阻力叫电阻，用字母符号R表示。电阻的单位是欧姆．通常用表示。l欧姆的
定义为：当加到导体上的电压为l伏特时，将导体中的电流限制在1安培所需
要的电阻值。
Resistor, Capacitor and Inductor
Unit 2 Resistor, Capacitor and Inductor
is one volt. Larger amounts of resistance are commonly expressed in kiloohm (KΩ) and in megohm (MΩ).
电容器
电能可以储存在电场中，能够储存电能的装置叫电容器。电池被连接在两个金属板上，电荷将经
过很短的流动而汇集在一个电极板上。假若断开电池，电容器将保持电荷以
及与电荷相关的电压。
Resistor, Capacitor and Inductor
Unit 2 Resistor, Capacitor and Inductor
Unit 2 Resistor, Capacitor and Inductor
Resistor，Capacitor and Inductor
Translation Reading More Translating skills Text
Resistor, Capacitor and Inductor
A coil of many turns will have more inductance than one of few turns. Also if a coil is placed on an iron core its inductance will be greater than it was without the magnetic core. The unit of induct-
电子信息专业英语(第二版)(李白萍)章 (9)
Unit 9 Digital Signal Processing 1. The essentials of analog-to-digital and digital-
to-analog conversion
The first essential step in analog-to-digital (A/D) conversion (as shown in Figure 9.1) is to sample an analog signal. This step is performed by a sample and hold circuit, which samples at regular intervals called sampling intervals. The length of the sampling interval is the same as the sampling period, and the reciprocal of the sampling period is the sampling frequency fs. According to the Nyquist theorem, a signal with a maximum frequency of W Hz (ignal) must be sampled at least 2W samples per second to ensure accurate recording. When this minimum is not respected, distortion called aliasing occurs. Aliasing causes high frequency signals to appear as lower frequency signals.
电子与通信专业英语(第2版)[李霞][电子教案]
Unit 1 - Text(7)
Notes
[5] As a result of the widening of access opportunities, particularly in the United Kingdom, there is increasing heterogeneity in background knowledge in mathematics of students entering degree courses in engineering.
② 广泛使用被动语态，强调所论述的客观事物。
[例2] Chapters 7 and 8 are devoted to the calculus of functions of one variable and, recognizing again the mixed background knowledge in mathematics of the students, the basic ideas and techniques of differentiation and integration are reviewed in Chapter 7.
微分
离散的 方程式；等式 赋值；值的计算 adj. 指数的， 形式 n. 积分
异种 ，
Unit 1 - Text(2)
limit linear 性的） logarithmic matrix oscillatory sequence statistics trigonometric 法的 variable vector [5imit] [5iniE] n. adj. 极限 线性的（nonlinear，非线
第12章电子信息类专业英语第二版课本-李白萍省名师优质课赛课获奖课件市赛课一等奖课件
Unit Five ISDN
While these scenarios may sound idealistic and futuristic, they are very real possibilities with the implementation of ISDN. More than 100 ISDN trials or service implementations comprising more than 100,000 lines already exist today in Canada, England, France, Japan, the United States, Germany, and other countries.
Unit Five ISDN
Imagine a network that would bring simultaneous voice and data applications to the home. A central computer could control telephone ringing, temperature, lighting on a room-by-room basis, and the operation of home appliances. This computer could be controlled remotely by the user via the network. Other services might include call forwarding, call waiting, and special telephone ring signals, all tailored dynamically by the user depending upon the telephone number of the calling party. Two-way television and easy access to data and video services could all be available. Banking, insurance, and utility companies could design applications to take advantage of this network to provide better and more efficient service to the customer in the home.
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active有源的Binomial di二项式分布conceptual概念的discrete离散的fluctuation波动inflection变形
additivity叠加性buffer.缓冲器congestion拥塞discretize使离散的formalism形式infrared红外线的advocate主张者by means of依靠consensus一致同意disperse分散formula公式，规则inherent固有的
傅里叶级数integration积分
algebra代数学by-product副产品，出乎意料的结果consist of由什么组成disruptive使破裂的Fourier series
algorithm算法calculus微积分constituent组成的distort歪曲freak反常的intensity亮度
alleviate减轻capacitor电容器contour轮廓distortion扭曲fulcrum杠杆的支点interdisciplina跨学科的alphabetical字母的carrier载波contrast enhancem对比度增强distributive分配的fuzzy模糊的interference干扰
alternative另一个可选择的cascade串联converge收敛disturbance干扰GaAs砷化镓interpratation说明 解释amendment改善cautery烙convolution卷积DLC数据链路控制gate门intuitive直觉的
amplitude振幅CCSA中国通信标准协会coordinate坐标edge边缘generator发生器inverting input反相输入端AMPS高级移动电话系统CD光盘cosine余弦electributive心电图give rise to引起investigate调查，研究
电磁的GPRS通用分组无线业务ionosphere电离层
antenna天线CDMA码分多址couple耦合electromagnetic
电磁的gray level灰度IP互联网协议aperiodic非周期的CDMA码分多址cumulative累加的electromagnetic
approximation近似值cellular细胞的curriculum课程emulate模仿ground使接地jeopardize危害
arbitrary任意的channel频道cut-off frequency截止频率encapsulate封装harmonic谐波JPEG联合图像专家组argument自变量channel信道decimal part小数部分encoder译码器hemorrhage出血LAN局域网
arithmetic算术channelizat信道化deficiency缺乏 不足encompass包围heterogeneity不同成分latch闭锁人工智能circuitry电路，线路degradation退化enormous巨大的hierarchical分等级的lay the foundat给。
打下基础artificial intellig
ASICs专用集成电路closed loop闭环增益demodulator调解器entity实体histogram直方图LED发光二极管associative结合的coax同轴电缆derivative导数equalization均等，平等化homogeneity齐次性lever杆，杠杆
ATM异步传输模式coaxial同轴的despread解扩equation方程式IC集成电路limit极限
理想运放linear线性的attenuation衰减cochlea耳蜗diameter直径erratic不稳定的ideal operatio
attribute特征coefficient系数die骰子evaluation赋值identical相同的line-of-sight视线
logarithmic对数的
auditory耳的，听觉的coefficient系数differentiable可微分的Expert system专家系统IEEE电子电气工程师协会
authenticate鉴别认证cognitive认知的differential inpu差分放大器exponential指数的impedance阻抗LSB最低有效位avalanche雪崩collision碰撞differentiation微分facilitate使便利inadvertently不注意地magnetism磁性
baseband基带combinational logic circuit diffration衍射facility设备 工具incident入射的make sense of搞清。
的意识
独立同分布MAN城域网
Bernoulli distribut
伯努利分布commutative交换的diode二极管family族，一群相似的事物independent id
biblical圣经的computabili可计算的discipline学科FDMA频分多址inference推论map映射
binary二元的concentrati集中 浓缩discontinuity断绝filtering滤波infinitesimal无穷小matrix矩阵
MBWA移动宽带无线访问orthonormal规范正交QAM正交幅度调制sinusoid正弦曲线toss投，掷
mean均值oscillatory震荡的QPSK正交相移健控调制sinusoidal正弦曲线transmitter传感器
横磁的
membrance膜oscilloscope示波器quantization量化skeletal骨骼的Transverse Ma
旅游
meteorology气象学oscilloscope示波器quasi-periodic逆周期的Sonar声呐travel around
metropolitan大都市的overlapping重叠quealizer均衡器sparse稀疏的trigonometric
三角学的microscopy显微镜方法ozone新鲜的空气Radar雷达sparsely稀疏地truncation截断
二维的
modulating si调制信号paradigm范例radiation辐射spectrum频谱two-dimension
modulator调制器parameter参数random随机spreading code扩频码ubiquity无处不在的morphological形态学的passband通带reflective反射的stability稳定性UE用户设备
MOS金属氧化物半导体passive无源的refraction折射stabilize稳定ultrasound超声波
MSB最高有效位PDU协议数据单元register寄存器standard devia标准偏差ultraviolet紫外线的
MSO移动电话交换局peripheral devic外设replica复制品standard norma标准正态分布underlie成为—的基础
单向的
multiplexing多路技术permissible可允许的resonance谐振statistical统计学的unidirectiona
均匀分布
mythical神话的，虚构的perturbation微扰restraint约束statistical in统计推理Uniform distr
negative负的phase shift相移rigorous严格的statisyics统计学unity统一
NGN下一代网络pixel像素robust稳定呃呃呃sterilization杀菌UTRAN UMTS通用无线接入网Normal distri正态分布planar平面的rote死记硬背stimulate刺激variable变量
numeral数字Poisson distribu泊松分布round四舍五入stochastic随机的variance方差
N-WEST国家无线电子系统测试polarity极性route发送successive连续的variate变量
ODE常微分方程population总体sampling采样superposition重叠variation变化
OFDM正交频分复用potential电势saturation饱和surveillance监视vector矢量
OFDMA正交频分多址predominant主要的SDH同步数字体系symmetrical对称的，均匀的versatile通用的
offset抵消printed circuit 印制电路板SDMA空分多址synthesis综合 合成vibratory振动的
operator算子probability density f概率密度函数SDR软件无线电synthesize综合vocal发噪音的
射极跟随器
optical眼睛的product乘积segment部分tabulate列表voltage follo
optical fiber光纤profile剖面 侧面segmentation分割TCP传输控制协议wavelet小波
Oral presenta口头报告propagation传播semicustom半定制TDMA时分多址WDM波分复用orientation定位proportion比例sequence序列terabit万亿比特WiMAX微波存取全球互通orthogonality正交性pseudo-random伪随机的sequential log时序逻辑电路terminology专用术语
orthogonality正交PSIN公用交换电话网Sign-and-magni符号数值编码texture纹理。