信息科学与电子工程专业英语Lecture03_new.
信息科学与电子工程专业英语Lecture03_new.
© 2011 Aifeng Ren
Unit 3 电磁场, 天线和微波
EM Fields, Antenna and Microwaves
• Unit 3-1 电磁场
Electromagnetic Field
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Continuous structure: Classically, electric and magnetic fields are thought of as being produced by smooth motions of charged objects. For example, oscillating charges produce electric and magnetic fields that may be viewed in a “smooth”, continuous, wavelike manner.
——电磁场的结构
This quantum picture of the electromagnetic field has proved very successful, giving rise to quantum electrodynamics, a quantum field theory describing the interaction of electromagnetic radiation with charged matter.
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© 2011 Aifeng Ren
电子信息科学概论
任爱锋 电子工程学院
E-mail: afren@ Office: 新科技楼A901 Phone: 88202830-607 Mobile: 13384919599
电子信息专业英语整套课件完整版电子教案最全ppt整本书课件全套教学教程(最新)
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第三课 晶体管及其基本电路
现在，晶体管是电子技术中最重要的器件。它们不仅作为独立元件， 而且在集成电路微薄的硅片上可包含成千上万个晶体管
晶体管由3层半导体材料构成:一种类型的薄层在中间，两边分别是另 两种类型。可以有两种排列方式:N型在中间，P型在两边(PNP); P型在 中间，N型在两边(NPN )。中间层称为基极，两边外层分别称为发射 极和集电极(如图1-17所示)
电子信息是当今国内外发展最迅速、技术更新最快的工程领域之一， 电子信息专业英语对学习电子信息新知识和新技术起着非常重要的作 用。
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前言
本书是一本突出高等教育实用特点的电子信息专业英语教材，内容涉 及电工电子基础、仪器仪表使用、传感器技术、通信技术等方面，基 本覆盖了现代电子信息的各个领域，同时收录了一些电子信息新技术 领域发展前沿方面的文章(如太阳能、电子纸、蓝牙技术和3G等)。课 文内容丰富，题材广泛，通俗易懂，选择的文章实用性强并尽量保证 学生能利用已有专业知识理解课文内容。每课课后有词汇、注释、练 习及阅读等。在本书书后附有课文参考译文及部分练习参考答案，供 读者参考对照。另外，书后还附有电子专业词汇和科技英语阅读与翻 译技巧相关知识，供相关专业读者参考。
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前言
本书由王菲、施亚齐担任主编，并编写了第四、第五篇，董小琼编写 了第一篇，王俊清编写了第二篇，邹淑云编写了第三篇。
由于编者水平有限，时间仓促，书中难免有纰漏和不足之处，请尊敬 的教师、同学和广大学者批评指正。
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目录
电子信息工程专业英语教程Lesson3Microprocessors
2024/8/6
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A brief summary of all Pentium families
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• Pentium 4 - Introduced in 2000 (1.4-3.4GHz)
Latest Pentium architecture started out with a 400MHz system bus and 256KB L2 cache (later increased to 800MHz and 2MB). The first models contained 42 million transistors, used the 0.18 micron process and came in 423pin and 478-pin PGA packages. Intel's first Pentium 4 chipset was the 850 and supported only Rambus memory (RDRAM), but subsequent chipsets switched to DDR SDRAM.
• Difference
– Transistors – Microns – Clock speed – Data width – MIPS
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Brief introduction
Intel 4004
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Pentium IV
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Brief introduction
Intel 4004
• Pentium II Xeon - 1998-1999 (400MHz-450MHz) Typically used in high-end and 2-way and 4-way servers, Xeon specs were like Pentium II with L2 cache from 512KB to 2MB and 100MHz system bus.
电子信息专业英语
object.
传导电流意味着电子在物体内的流动
2.1 Grammar Features
② 分词
过去分词短语替代从句中的被动语态 现在分词短语替代从句中的主动语态
1)The power supply, which is shown in block-diagram in Fig.1, is a single-phase switch-mode inverter.
A three-phase circuit, as pointed out above, is merely a combination of three single-phase circuits. 正如上面所指出的那样，三相电路只不过是三个单相电路的组合。
3) The transistor, which is working with correctly polarities, can work as an amplifier.
The capacity of individual generators is larger and larger to satisfy the increasing demand of electric power.
单台发电机的容量越来越大，目的就是满足不断增长的用电需求。
(2) What does a fuse do? It protects a circuit. The function of a fuse is to protect a circuit.
2)Instrument transformers are installed on the high-voltage equipment. 互感器安装在高压设备上
2.1 Grammar Features
信息科学与电子工程专业英语_全文译文
Unit 1 电子学：模拟和数字Unit 1-1第一部分：理想运算放大器和实际限制为了讨论运算放大器的理想参数，我们必须首先定义一些指标项，然后对这些指标项讲述我们所认为的理想值。
第一眼看运算放大器的性能指标表，感觉好像列出了大量的数值，有些是陌生的单位，有些是相关的，经常使那些对运放不熟悉的人感到迷惑。
对于这种情况我们的方法是花上必要的时间有系统的按照列出的次序阅读并理解每一个定义。
如果没有对每一项性能指标有一个真正的评价，设计人员必将失败。
目标是能够依据公布的数据设计电路，并确认构建的样机将具有预计的功能。
对于线性电路而言，它们与现在的复杂逻辑电路结构相比看起来较为简单，（因而在设计中）太容易忽视具体的性能参数了，而这些参数可极大地削弱预期性能。
现在让我们来看一个简单但很引人注意的例子。
考虑对于一个在50kHz频率上电压增益为10的放大器驱动10k 负载时的要求。
选择一个普通的带有内部频率补偿的低价运放，它在闭环增益为10时具有所要求的带宽，并且看起来满足了价格要求。
器件连接后，发现有正确地增益。
但是它只能产生几伏的电压变化范围，然而数据却清楚地显示输出应该能驱动达到电源电压范围以内2到3伏。
设计人员忽视了最大输出电压变化范围是受频率严格限制的，而且最大低频输出变化范围大约在10 kHz受到限制。
当然，事实上这个信息也在数据表上，但是它的实用性并没有受到重视。
这种问题经常发生在那些缺乏经验的设计人员身上。
所以这个例子的寓意十分明显：在开始设计之前总要花上必要的时间来描写全部的工作要求。
关注性能指标的详情总是有益的。
建议下面列出的具体的性能指标应该考虑：1. 在温度，时间和供给电压下的闭环增益的精确性和稳定性2. 电源要求，电源和负载阻抗，功率消耗3. 输入误差电压和偏置电流，输入输出电阻，随着时间和温度的漂移4. 频率响应，相位偏移，输出变化范围，瞬态响应，电压转换速率，频率稳定性，电容性负载驱动，过载恢复5. 线性，失真和噪声6. 输入，输出或电源保护要求，输入电压范围，共模抑制7. 外部补偿调整要求不是所有的指标项都是有关的，但要记住最初就考虑它们会更好，而不要被迫返工。
信息科学与电子工程专业英语第二版答案
信息科学与电子工程专业英语第二版答案1、The house was completed five months ago. [单选题] *A. 完成(正确答案)B. 复杂C. 开始D. 装着2、We got up early this morning and took a long walk after breakfast. We walked _____ the business section of the city. [单选题] *A. amongB. betweenC. through(正确答案)D. upon3、35．Everyone in China ______ Mid-Autumn Day. [单选题] *A．likes(正确答案)B．likeC．is likingD．are like4、78．—Welcome to China. I hope you'll enjoy the ________.—Thank you. [单选题] * A．tour(正确答案)B．sizeC．nameD．colour5、Once you get on the road, here are some traffic _______ to remember. [单选题] *A. problemsB. positionsC. rules(正确答案)D. points6、I walked too much yesterday and （）are still aching now. [单选题] *A. my leg's musclesB. my leg muscles(正确答案)C. my muscles' of legD. my legs' muscles7、Will you please say it again? I _______ you. [单选题] *A. didn’t hear(正确答案)B. don’t heardC. didn’t heardD. don’t hear8、He _______ walks to school, because he lives near school. [单选题] *A. sometimes(正确答案)B. neverC. doesn’tD. don’t9、I’m still unable to make myself_____in the discussion, which worries me a lot. [单选题]*A.understandB.understood(正确答案)C.understandingD.to be understood10、73．The moonlight goes ____ the window and makes the room bright. [单选题] * A．acrossB．through(正确答案)C．overD．in11、You have coughed for several days, Bill. Stop smoking, _______ you’ll get better soon. [单选题] *A. butB. afterC. orD. and(正确答案)12、Mary, together with her children ,_____ some video show when I went into the sitting room. [单选题] *A. were watchingB. was watching(正确答案)C. is watchingD. are watching13、Generally speaking, it is _______ to ask a woman’s age in western countries. [单选题] *A. possibleB. importantC. not polite(正确答案)D. polite14、He was born in Canada, but he has made China his _______. [单选题] *A. familyB. addressC. houseD. home(正确答案)15、I knocked on the door but _______ answered. [单选题] *A. somebodyB. anybodyC. nobody(正确答案)D. everybody16、The manager isn’t in at the moment. May I _______ a message? [单选题] *A. take(正确答案)B. makeC. haveD. keep17、—What ______ your sister ______ this Saturday?—Something special, because it’s her birthday. （）[单选题] *A. are; going to doB. is; going to do(正确答案)C. does; doD. did do18、I _______ the job because I couldn’t stand(忍受) the rules. [单选题] *A. gave inB. gave outC. gave backD. gave up(正确答案)19、?I am good at schoolwork. I often help my classmates _______ English. [单选题] *A. atB. toC. inD. with(正确答案)20、People cut down many trees ______ elephants are losing their homes. （）[单选题] *A. ifB. butC. so(正确答案)D. or21、Do not _______ me to help you unless you work harder. [单选题] *A. expect(正确答案)B. hopeC. dependD. think22、12．That is a good way ________ him ________ English. [单选题] *A．to help；forB．helps；withC．to help；with(正确答案)D．helping；in23、( ) She keeps on learning English all the time. So far, she______three books of New Concept English. [单选题] *A. has learned(正确答案)B. have learnedC. had learnedD. learn24、11．No one ________ on the island(岛). [单选题] *A．liveB．lives(正确答案)C．livingD．are living25、If you do the same thing for a long time, you'll be tired of it. [单选题] *A. 试图B. 努力C. 厌倦(正确答案)D. 熟练26、68．—How ________ apples do you want?—I want two kilos. How ________ are they?—They are 5 yuan. [单选题] *A．much; manyB．many; much(正确答案)C．many; manyD．much; much27、Modern plastics can（）very high and very low temperatures. [单选题] *A. stand(正确答案)B. sustainC. carryD. support28、“I think you are wonderful,”she said, “You are so patient with your little George.”[单选题] *A. 耐心(正确答案)B. 细心C. 关心D. 偏心29、Then the speaker _____the various factors leading to the economic crisis. [单选题] *A.went onB.went afterC.went into(正确答案)D.went for30、71．How beautiful the shoes look! Can I________？[单选题] *A．try it onB．try on itC．try them on(正确答案) D．try on them。
电子信息工程专业英语
The ability to analyze, evaluate, and apply information critically This investments distinguishing fact from opinion, identifying biases, and evaluating the reliability of sources
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Electronic Information Engineering English Vocabulary
Vocabulary of electronic components
Inductor
A component used to store magnetic energy, commonly represented by the symbol L.
Professional course design and learning content
Professional courses: Typical courses in Electronic Information Engineering include analog electronics, digital electronics, microelectronics, semiconductors, optoelectronics, telecommunications, signal processing, image processing, and more
Connecting multiple devices enables the exchange and forwarding of data frames.
05-信息科学与电子工程专业英语(第2版)-吴雅婷-清华大学出版社
radio system, the allocated bandwidth is always limited. For
mobile phone systems the total bandwidth is typically 50MHz,
which is split in half to provide the forward and reverse links
每个信道只支持一个用户
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FDMA is used as the primary breakup of large allocated frequency bands and is used as part of most multi-channel systems. Figures 5.1 and 5.2 show the allocation of the available bandwidth into several channels.
FDMA作为大多数多信道 系统的一部分用于初步分 割分配到的宽频带。
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There are many extensions, and hybrid techniques for these methods, such as OFDM, and hybrid TDMA and FDMA systems. However, an understanding of the three major methods is required for understanding of any extensions to these methods.
New Words
simultaneous 同时的 allocate 分配，指派 round robin 循环（复用） frame 帧 burst 爆发 pseudo random noise 伪随机噪声 spur 刺激，激励 tolerance 容忍，宽容 despread 解除扩频 alternate 交替
信息科学与电子工程专业英语课后答案
U n i t1E x e r c i s e s(1)T r a n s l a t e t h e f o l l o w i n g s e n t e n c e s i n t o C h i n e s e.1.As with series resonance, the greater the resistance in thecircuit the lower the Q and, accordingly, the flatter andbroader the resonance curve of either line current or circuitimpedance.对于串联谐振，电路中的电阻愈大Q值就愈低，相应地线路电流或电路阻抗的谐振曲线也就愈平、愈宽。
2.A wire carrying a current looks exactly the same and weighsexactly the same as it does when it is not carrying a current.一根带电的导线其外表与重量都与不带电导线完全一样。
3.Click mouse on the waveform and drag it to change the pulserepetition rate, or directly enter a new value of the period inthe provided dialogue box, while keeping the pulse widthunchanged.在波形上点击鼠标并拖动来改变脉冲重复频率，或者在提供的对话框中直接输入新的期值，而保持脉冲宽度不变。
4.Electronics is the science and the technology of the passage of charged particles in a gas, in a vacuum, or in a semiconductor. Please note that particle motion confined within a metal only is not considered electronics.电子学是一门有关带电粒子在气体、真空或半导体中运动的科学技术。
经典：信息科学与电子工程专业英语-unit-2
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A transistor is constructed by creating a sandwich of differently doped semiconductor layers. The two most common types of transistors, the bipolar-junction transistor (BJT) and the field-effect transistor (FET) are schematically illustrated in Figure 2.1.
将电压加在绝缘的栅极上时， 可使电流由漏极流向源极。
因为栅极电压诱导基底上的N通道， 使电流能在两个N区域之间流动。
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Another basic semiconductor structure shown in Figure 2.1 is a diode, which is formed simply by a junction of N-type and Ptype silicon. Diodes act like one-way valves by conducting current only from P to N.
半导体材料上制作晶体管或二极管 所形成的小芯片用塑料封装以防损 伤和被外界污染。
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Small wires are connected within this package between the semiconductor sandwich and pins that protrude from the package to make electrical contact with other parts of the intended circuit.
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电磁场可用两种截然不同的观点来看。
连续结构：经典地，电场和磁场被认为是由带电物体的平滑 运动产生的。例如，振荡电荷产生电场和磁场，可看成光滑 的、连续的波动方式。
Continuous structure: Classically, electric and magnetic fields are thought of as being produced by smooth motions of charged objects. For example, oscillating charges produce electric and magnetic fields that may be viewed in a “smooth”, continuous, wavelike manner.
电磁场是由带电物体产生的物理场。它会影响场附近的带电 物体的行为。电磁场在空间无限延伸，描述电磁相互作用。 它是自然界中四个基本作用力之一（其余为万有引力，弱相 互作用，强相互作用）。
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vicinity 邻近，附近 charge 电荷 photon 光子 atom 原子 catastrophe 大灾难，大祸 emission 发射，散发 incident 入射的 electrodynamics 电动力学 gravitational 重力的
© E电E1子41 信息科学概论
stationary 静止的，不变的 quantum 量子 oscillate 振荡 ultraviolet 紫外线的 photoelectric effect 光电效应 metallic 金属的 eject 喷射，强制离开 dynamics 动力学 entity 实体
The field can be viewed as the combination of an electric field and a magnetic field. The electric field is produced by stationary charges, and the magnetic field by moving charges (currents); these two are often described as the sources of the field. The way in which charges and currents interact with the electromagnetic field is described by Maxwell’s equations and the Lorentz force law.
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Unit 3-1 电磁场
The electromagnetic field is a physical field produced by electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction. It is one of the four fundamental forces in the nature (the others are gravitation, the weak interaction, and the strong interaction)
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© 2011 Aifeng Ren
电子信息科学概论
任爱锋 电子工程学院
E-mail: afren@ Office: 新科技楼A901 Phone: 88202830-607 Mobile: 13384919599
© E电E1子41 信息科学概论
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From a classical point of view, the electromagnetic field can be regarded as a smooth, continuous field, propagated in a wavelike manner, whereas from a quantum mechanical point of view, the field can be viewed as being composed of photons.
从经典的角度，电磁场可认为是平滑、连续的场，以波动方 式传播；而从量子力学的角度，场可看作是由光子组成的。
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——电磁场的结构
The electromagnetic field may be viewed in two distinct ways.
© 2011 Aifeng Ren
Unit 3 电磁场, 天线和微波
EM Fields, Antenna and Microwaves
• Unit 3-1 电磁场
Electromagnetic Field
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电磁场可以看成是电场和磁场的结合。电场是由静止电荷产 生的，磁场由运动电荷（电流）产生；这两种（电荷）通常 被描述为电磁场的源。电荷和电流与电磁场相互作用的方式 由麦克斯韦方程组和洛伦兹力定律所描述。
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