电子与通信专业英语课后答案(共6页).doc
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1、精选优质文档-倾情为你奉上Unit 1Translation into Chinese2【mathematical analysis 数学归纳法】 【algebra 代数】 【calculus 微积分】 【function 函数】 【probability theory 概率论】 【matrix 矩阵】【equation 等式,方程式】 【geometry 几何】3(1)The calculus, aided by analytic geometry, proved to be astonishingly powerful and capable of attacking hosts of p
2、roblems that had been baffling and quite unassailable in earlier days. 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)Of the many remarkable mathematical discoveries made in th 17th century, unquestionably the most outstanding was the invention of calculus. 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)A great forward s
3、tride was made in 1821,when the French mathematician Augustin Louis Cauchy developed an acceptable theory of limits, and then defined continuity, differentiability, and the definite integral in terms of the limit concept. 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)Mat
4、hematical analysis is one of the most important divisions of higher mathematics; its main object is studying variables and their relationships. 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)The main purpose of a natural or technical science is to establish the relationships between the variables involv
5、ed in the process under consideration and to describe it mathematically. 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)Mathematical methods lie in the foundation of physics, mechanic, engineering and other natural sciences. For all of them mathematics is a powerful theoretical and practical tool without
6、 which no scientific calculation and no engineering and technology are possible. 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。1) Unit 22【random variable随机变量】 【expert system 专家系统】【probability distribution概率分布】 【density function密度函数】【computer simulation计算机仿真】 【sample space样本空间】【s
7、tatistic inference统计学的推论】 【impossible event不可能事件】【standard deviation标准偏差】 【relative frequency相对频率】Translation into Chinese1) A lot of information is required to specify the exact distribution of a random variable, and even more to specify the joint distribution of two or more variables. 描述精确的随机变量的分析
8、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) For any random variable the difference between the values of the distribution function at two points is the probability that a value of the random variable will between those two points(or is equa
9、l to the upper one) 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) In general, the probability p of a random event can be interpreted as meaning that if the experiment is repeated a large number of times, the event would be observed about 100p percent of the time. 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
10、数是p乘以实验次数5) In statistics it is customary to refer to any process of observation as an experiment,在统计学中,将任何观察过程叫做实验是一个习惯6) If an event definitely cannot occur upon realization of the set of conditions it is called impossible. 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 3第二题【Output Peak Current峰值输出电流】【Outpu
11、t Voltage Swing输出电压摆幅】【Open-Loop Gain(Av) 开环增益】【Supply Voltage Range固定电压范围】【Power Dissipation功率消耗】 【Gain Bandwidth Product增益带宽积】【Common Mode Rejection Ratio共模抑制比,同相抑制比】 【Slew Rate转换速率】 【Input Impedance输入阻抗】【Quiescent Current静态电流】 【Input Offset Voltage(Vos)输入补偿电压】【Input Bias Current输入偏置电流】a: the rati
12、o between the input and output signals 输入输出信号比值b :the minimum value of the small-signal gain bandwidth product (in Hz)of a voltage amplifier at specified frequency ad at reference condition 电压放大器在特定频率和相关情况下小信号增益带宽的最小值c: the maximum dissipation that the amplifier can safely support 防盗器能安全支持的最大损耗d:the
13、 maximum rate of change of the output signal in response to a step input 对阶跃输入信号的输出的最大变化率e:the maximum current that can be delivered in the output of the amplifier 放大器能输出的最大电流f: the total impedance as seen from the input terminals 输入端的总阻抗g: the maximum (positive and negative) output voltage 最大(正或负)输
14、出电压h: a measure of the ability of the amplifier to produce zero output voltage when the inputs havethesame voltage当两个输入端电压相同时放大器输出为0电压的能力的衡量i: the range of voltage that can be applied to an amplifier可应用于放大器的电压范围j: the DC current required by the inputs of the amplifier to properly drive the first sta
15、ge防盗器输入端所需的用以驱动第一阶段的直流电流k: the current produced by the amplifier when in normal operation正常工作下放大器出身的电流l :a small DC output voltage when 0V is applied to the input当输入为0时小的直流输出电压translation into Chinese2)在式中。4)When feedback is used around an operational amplifier ,the closed loop gain of the circuit i
16、s determined by a ratio involving the input and feedback impedances used .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)The operational amplifier is an extremely efficient and versatile device. Its applications span the broad electronic industry filling requirements for signal conditioning ,special transfer fun
17、ctions, analog instrumentation ,analog computer ,and special systems design.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 4Translation into Chinese1) If the input to a linear system is a sinusoidal wave ,the output will also be a sinusoidal wave, and at exactly the same frequency
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