level 4
1.Homodyne 零差 2.Closed control loops 闭合控制环（闭环控制） 3.Chirp 线性调频脉冲信号 4.The high bandwidth homodyne 高带宽零差 5.Infineon公司 英飞凌公司 6.Load pulling 负载上拉、负载拉移、负载拉动 7.Free running 自由振荡 8.Offset 偏置、偏移量 9.Generation of precise frequency chirps 精确线性调频的频率发生 10.Ramps 接线端钮 11.Frequency sweep 频率搜索 12.Frequency versus time 频率对时间、频域对时域 13.The mathematically predicted course 数学预测发展趋势 14.Come from finite clock frequency and converter resolution 来自精确时钟频率和转换器精度 15.Radio frequency 射频
2007年07月02日 11点07分
1
level 4
电子信息工程专业英语的词汇在http://www.google.com/search?hl=zh-CN&newwindow=1&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=information+technology+terms&spell=1 你选择第二个Glossary of Academic Information Technology Terms 但是上面全部是英语的，点击goole页里的“翻译此页”，就可以看到解释了。虽然是机器翻译的，但我想学这个专业的理解应该是没有问题的。 呵呵，词汇暴多，任务繁重，加油喽~~~参考资料：http://www-rohan.sdsu.edu/glossary.html
2007年07月02日 11点07分
2
level 4
http://zhidao.baidu.com/question/19417258.html未免和谐留个底
2007年07月02日 11点07分
3
level 4
insert the button-type holder into the remote controller在遥控器中插入一个键状支架。
2007年07月02日 12点07分
5
level 4
the digitization process introduces a distertion of the information数字化处理对信息产生失真。
2007年07月02日 12点07分
6
level 4
the key point is that a single type of digital device may store all kinds of information关键是一个简单（型号）的电子设备可能储存着各种信息。
2007年07月02日 12点07分
7
level 4
packet switched data formats are much more common than their circuit switched counterparts分组交换的数据格式比对应的电路交换常见得多。
2007年07月02日 12点07分
8
level 4
digitlzing graphics,full-motion video and sound produce enormous quantltles of data.数字化图像，全动态视频和声音的过程中产生巨大量的数据
2007年07月02日 12点07分
9
level 4
the bluetooth baseband protocel is a combination of circuit and packet switching.蓝牙基段协议是电路交换和分组交换的结合。
2007年07月02日 12点07分
10
level 4
the first step of compressing a digital cideo signal or algorithm is the pre-processing function.压缩数字视频信号或算法的第一步是预处理方程。
2007年07月02日 12点07分
11
level 4
buses are paths for transmitting data and signals among the barious parts of the computer system.总线是计算机系统各部分之间传输数据和信号的通道。
2007年07月02日 12点07分
12
level 4
3.a wire conductor's size is called its gauge. 2.insert the button-type holder into the remote controller. 1.of all the metals the best conductors are silver,gold and copper.3。导线的尺寸就是他的规格 2。把按钮状的支架插入遥控器 1。所有金属中最好的导体是 银金和铜
2007年07月02日 12点07分
14
level 4
分频器是一对音箱的灵魂，它直接决定了音箱的音色。无论是目前还是今后，双声道立体声仍将是家庭高保真放音的主要方式并将一直广泛地为发烧友所采用。它不会因高质量多声道系统的出现而消亡，这是因为双声道系统简单，调整和使用方便，系统成本低而音质相当高。当然，这并不意味着双声道系统的音质没有提高的余地和必要。若要进一步提高双声道重放时的音质，那么采用前级电子分频器是在现有或原有系统基础上最为经济而实用的方案。本文向读者介绍电子分频器二分频的原理计算和制作。 关键词：滤波器，EWB，分频器。Divider is a Speaker of the soul, it will determine the tone speakers. Either at present or in future, Two-channel stereo is still high fidelity audio family is the main mode and has been widely adopted for the fans. It will not be high-quality multi-channel sound system and the emergence of extinction, it is because a simple two-channel sound system, adjust and use, system cost low and the sound quality is quite high. Of course, this does not mean that the two-track system to improve the sound quality is no room for and necessary. To further enhance the two-channel playback of timbre, Before then E-divider in the existing or legacy systems based on the most economical and practical solution. This article introduces the reader to the electronic frequency divider of the two - principles calculation and production. Keywords : filter, EWB, dividers.
2007年07月02日 12点07分
15
level 4
摘要：音频分频器是一对音箱的灵魂，它直接决定了音箱的音色。而双声道系统简单，调整和使用方便，系统成本低而音质相当高，采用前级电子分频器分频能提高双声道重放时的音质。本文详细介绍了几种常用的RC有源滤波器的两种不同的设计方法及其步骤和滤波器的基本原理、计算及其幅频特性。并介绍了基于运放的有源音频分频器的原理、计算和制作，以及电子分频与功率分频的特点及对比。两种不同增益的分频电路的介绍，并选择其中一种根据设计要求、滤波器的原理与设计方法算出本设计中各元件的参数值，还介绍了一种在电子技术界广为应用的计算机仿真软件EWB的应用及其对本设计的仿真。最后通过实验对本设计的音频分频电路进行了验证，并将此与理论分析的结果进行对比，做出误差分析。 关键词：RC有源滤波器，频率响应，分频器，电子分频，功率分频，EWB。Abstract: The audio frequency frequency divider is a pair of sound boxsoul, it has directly decided the sound box timbre. But double soundtrack system simple before, the adjustment and the easy to operate,the system cost low when the acoustic fidelity is quite high, uses thelevel electron frequency divider frequency division to be able toenhance the double sound track replays the acoustic fidelity. Thisarticle in detail introduced several commonly used RC active filtertwo different designs method and its the step and the filter basicprinciple, the computation and its the amplitude-frequencycharacteristic. And introduced based on transports the active audiofrequency frequency divider principle, the computation and themanufacture which puts, as well as electronic frequency division andpower frequency division characteristic and contrast. Two kind ofdifferent gains frequency dividing circuits introduction, and choosesone kind of basis to design the request, the filter principle and thedesign method figures out in this design various parts parametervalue, but also introduced one kind in the electronic technologywidely application computer simulation software EWB application andits to this design simulation. Finally has carried on the confirmationthrough the experiment to this design audio frequency frequencydividing circuit, and carries on this with the theoretical analysisresult the contrast, makes the error analysis.
2007年07月02日 12点07分
16
