Under the research of the characteristic of three classical analog filter with simulation software - matlab , this paper devised lowpass circuit that not only can keep the useful signal out of distortion but also benefits the following sample tache and filter tache 用matlab分析了三种经典模拟滤波器的滤波性能，设计出了能保持有用信号不失真又有利于后面的采样和数字滤波环节的低通电路。
Is a much more genuine reflection of the next generation s love culture , and it is what makes joe ma s films always look better and more intimate to the audience in hong kong that is mostly composed of teenagers and young people , since they can actually resonate with the characters in these films 相反来说，这片好看和突出之处是拍出爱情的清新和盲目感觉，不失真之馀又能兼顾娱乐性，能够获得年青一族的共鸣，成功实非侥幸。
Is a much more genuine reflection of the next generation s love culture , and it is what makes joe ma s films always look better and more intimate to the audience in hong kong that is mostly composed of teenagers and young people , since they can actually resonate with the characters in these films 相反来说， 《这》片好看和突出之处是拍出爱情的清新和盲目感觉，不失真之馀又能兼顾娱乐性，能够获得年青一族的共鸣，成功实非侥幸。
Letter ratio : point biggest not lose the signal strength of the true voice with at the same time of the emanative noise strength opposite voice for of ratio , usually with meaning , letter comparing more bigly , turn on electricitying the road more small , quality more pure and unadulterated . want to choose the letter the ratio in the product of above . new of summer is with the series the product s letter ratio all in the above , have more professional of performance 信噪比：指最大不失真声音的信号强度与同时发出的噪音强度之间的比率，通常以表示，信噪比越大，功放电路的相对噪声就越小，音质就越纯正。要选信噪比在以上的产品。夏新和系列产品的信噪比都在以上，有更加专业的表现。
" electronic 1c chip drawing system " provides many functions such as " modify the position of the component ' s diagram " " modify the color of the component ' s diagram " " magnify and minify the component ' s diagram without distortion " " change the type of drawing line " " edit some physical properties of the component " " copy and paste diagram of one component " " delete one or more component diagrams " " move more than one components " positions " " change the z _ order of the diagram , set it to back or bring it to front " " save the drawing of the electronic components to one file and the file extension name is * . brd " " print the drawing " . users can finish all these functions easily by clicking and dragging the mouse 电路板元器件绘制系统主要完成了使用鼠标拖拽、鼠标点按的方式绘制电路板上各种常见的元器件图形；编辑电路板上元器件图形的位置；编辑元器件图形的颜色；不失真的对器件图形进行放大和缩小；编辑元器件图形的线型；编辑电路板上各个器件的物理属性(比如电阻的阻值大小、电容的容量大小、额定电压等) ；复制已经绘制出的电路板上的器件；粘贴剪贴板上的器件；删除单个或多个已经绘制出的器件图形；同时改变多个器件图形的位置；改变绘制区内各个元器件的zorder顺序，也就是可以将层叠在一起的图形置前或置后；把绘制的电路板器件图保存到指定文件中；能打开、查看和修改保存的电路板器件图；打印电路板器件图。
Voltage segment network constituted by electron switch of bta and controlled by single chip microcomputer constitutes a new fast electronic regulator . for bta cross zero touch off , sine wave which is exported is integrity . a new way to generate stable ac current is found with feed back control system by single chip microcomputer . so a new high power ac current regulator is developed 采用单片机控制双向可控硅作为电子开关所组成的电压分节网络,组成新颖快速的电子调压器；由于双向可控硅过零触发,所以其输出是不失真的完整正弦波；再用单片机组成反馈控制系统,从而找到了交流稳流的新方法,研制出一个大功率交流稳流电源
Abstract : voltage segment network constituted by electron switch of bta and controlled by single chip microcomputer constitutes a new fast electronic regulator . for bta cross zero touch off , sine wave which is exported is integrity . a new way to generate stable ac current is found with feed back control system by single chip microcomputer . so a new high power ac current regulator is developed 文摘:采用单片机控制双向可控硅作为电子开关所组成的电压分节网络,组成新颖快速的电子调压器；由于双向可控硅过零触发,所以其输出是不失真的完整正弦波；再用单片机组成反馈控制系统,从而找到了交流稳流的新方法,研制出一个大功率交流稳流电源
As a result , the ultra - wideband antenna must be able to radiate and receive the short pulse signals without distortion , in other words , the ultra - wideband antenna has to own several octave impedance bandwidth or more , and stable phase center , which enables the ultra - wideband antenna to transmit and receive short pulse signals without distortion 这就要求超宽带天线具有辐射和接收时域短脉冲信号的能力,即拥有几个甚至十几个倍频程的阻抗带宽,同时天线应具有稳定的相位中心以保证不失真地收发短脉冲信号。
Based on fuzzy logic , an effective algorithm of edge connection is proposed . simulation result shows our approach can highly improve the connectivity of the extracted image boundaries without distortion . this work lays foundations of target detection , tracking , and recognition for photoelectric tracker and imaging radar 通过理论分析及仿真结果证明,本文提出的梯度参数自学习统计的方法和基于模糊判决的边缘连接方法能够有效地提取边缘点进行边缘连接,能够在保持原有图像不失真的情况下,较大地提高图像边界的连通性,为光电跟踪器和成像雷达的目标检测、跟踪和识别等提供良好的基础。
The circular monopole ultra - wideband antenna has not only the extremely wide band in frequency domain , but also stable phase center , which makes the antenna radiate and receive the short pulse signals without any distortion , and suitable for various ultra - wideband communication systems or the single antenna of other multi - frequency operating communication systems 这种天线不仅具有极宽的阻抗带宽,还拥有稳定的相位中心。这使得圆盘单极超宽带天线可以不失真地收发时域短脉冲信号。所以该天线不仅适用于超宽带通信中,还能够作为复杂多频工作系统的单一收发天线。
