洛阳理工学院 2012/2013 学年 第一学期专业英语 期末考试试题卷（A）
适用班级：B100509/10/11/12 考试日期时间：2012.11.29
一、 用英语写出缩写形式的全称(每小题1分，共10分) 1. ADC 2. CATV 3. CAD 4. DSP 5. DC 6. FM 7. HDTV 8. IEE 9. IEEE 10. LED
二、 Please translate the following phrases into English. (每小题2分，共30分) 1. 模拟电路 2. 集成电路 3. 共射极电路
4. 负载电阻 5. 步进制 6. 纵横制 7. 电子交换机 8. 长途网 9. 灰度图像 10. 直方图均衡? 11. 图像对比度 12. 结果矩阵 13. ? 真空三极管 14. 纠错编码? 15. 视线传播
三、 Please translate the following phrases into Chinese. (每小题2分，共30分)?
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1. very-high-frequency? 2. ultra-high-frequency?
3. quadrature amplitude modulation? 4. stored-program control? 5. circuit switch? 6. packet switch?
7. CATT (China Academy of Telecommunications Technology)? 8. edge filter?
9. magnitude spectrum? 10. object recognition? 11. phase spectrum
12. ? binary-coded number ? 13. Hi-Fi?
14. electromagnetic induction 15. single-sideband
四、 Translate the following sentences into Chinese. (每小题2分，共30分)? 1. See the answers as given at the end of this book． 2. For all its great size, the machine moves noiselessly．
3. It is desired that the switch (should) produce only one clock pulse each time it is closed．
4. In a transistor the output current depends upon the input current, hence it is a current operated device. 5. As rubber prevents electricity from passing through it, it is used as insulating material．
6. Depending on the relationship between the signal frequencies and the sampling rate, spectral inversion
may cause the shape of the spectrum in the baseband to be inverted from the true spectrum of the signal.?
7. Low pass filters blur images, high pass filters emphasize sharp changes in gray scale level, and edge
filters locate edges in an image． ?
8. The avalanche photodiode (APD) detector is followed by a front-end amplifier and equalizer or filter
to provide gain as well as linear signal processing and noise bandwidth reduction.
9. The main benefits of TD-SCDMA are that it can be implemented less expensively than comparable
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3G systems since it is much more spectrum efficient and is compatible with GSM network elements, allowing 3G services without installation of completely new infrastructure.
10. Furthermore, this information would be available to the patient’s private physician and to this (or
another) hospital in case of a subsequent readmission or transfer to another facility.
11. Several different types of computer peripherals may appear as network terminals, and so also can
computers functioning in several different ways.
12. Intensity is a measure of power per unit area, and even a laser that emits only a few milli-watts can
produce a lot of intensity in a beam that’s only a millimeter in diameter.
13. 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．
14. 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.?
15. Intergraded circuits are also classified according to their functions. Digital or logical IC are used as
switches, they are either on or off. In computers the on and off states correspond to 0 or 1.Other IC is called linear or analog IC.??
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洛阳理工学院 2012/2013 学年 第一学期专业英语 期末考试试题卷（A）答案及评分标准
适用班级：B100509/10/11/12 考试日期时间：2012.11.29
一 用英语写出缩写形式的全称(每小题1分，共10分) 1. A/D, ADC Analog-to-Digital Converter 2. CATV Cable Television 3. CAD Computer-Aided Design
4. DSP Digital Signal Processing, Digital Signal Processor 5. DC, dc Direct Current 6. FM Frequency Modulation 7. HDTV High Definition Television 8. IEE Institute of Electrical Engineers
9. IEEE Institute of Electrical and Electronic Engineers 10. LED Light Emitting Diode
二 Please translate the following phrases into English. (每小题2分，共30分) 1. 模拟电路 analog circcuit 2. 集成电路 integrated circuit 3. 共射极电路 common emitter circuit
4. 负载电阻 load resistor 5. 步进制 step-by-step 6. 纵横制 crossbar
7. 电子交换机 electronic switch 8. 长途网 long-distance network 9. 灰度图像 gray scale image
10. 直方图均衡?histogram equalization 11. 图像对比度 image contrast 12. 结果矩阵 resultant matrix 13. ? 真空三极管 triode vacuum tube 14. 纠错编码?error-correction code 15. 视线传播 los propagation
三 Please translate the following phrases into Chinese. (每小题2分，共30分)? 1. very-high-frequency?甚高频
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2. ultra-high-frequency?超高频
3. quadrature amplitude modulation?正交幅度调制 4. stored-program control?存储程序控制 5. circuit switch?电路交换 6. packet switch?分组交换
7. CATT (China Academy of Telecommunications Technology)?中国电信技术学会 8. edge filter?边缘滤波器 9. magnitude spectrum?幅度谱 10. object recognition?目标识别 11. phase spectrum 相位谱
12. ? binary-coded number 二进制编码数 ? 13. Hi-Fi?高保真度
14. electromagnetic induction 电磁感应 15. single-sideband 单边带
四 Translate the following sentences into Chinese. (每小题2分，共30分)? 1. See the answers as given at the end of this book．请参阅本书末尾给出的答案。
2. For all its great size, the machine moves noiselessly．尽管体积大, 但该机器的运转噪声很小。 3. It is desired that the switch (should) produce only one clock pulse each time it is closed．人们希望,
开关每闭合一次只产生一个脉冲。
4. In a transistor the output current depends upon the input current, hence it is a current operated device.
晶体管的输出电流取决于输入电流, 因此它是电流控制器件。
5. As rubber prevents electricity from passing through it, it is used as insulating material．因为橡胶不导
电, 所以用作绝缘材料。
6. Depending on the relationship between the signal frequencies and the sampling rate, spectral inversion
may cause the shape of the spectrum in the baseband to be inverted from the true spectrum of the signal.?根据信号频率和采样频率之间的关系的不同, 可能出现“频谱反转”现象——基带频谱的形状和信号真实频谱的形状正好相反。
7. Low pass filters blur images, high pass filters emphasize sharp changes in gray scale level, and edge
filters locate edges in an image． ?低通滤波器使图像变得模糊, 而高通滤波器突出了图像的灰度锐变, 边缘滤波器则对图像边缘进行定位。
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