为什么同样颜色的光有的能色散有的不能?为什么只有感受三种颜色的椎细胞(红、绿、蓝)，而这三中波的波长都比紫光波长长，我们却能看到紫色？我认为把什么人眼的细胞分为...

对IQ接收器最重要的两个参数,即I和Q两路分量之间的幅度一致性和相位正交性,可采 用如下办法计算:把I、Q 两路信号分别作FFT ,找出频域内信号的幅度,即可算得两路分量的幅度一 致性 把I、Q两路信号合成一个复数信号,作FFT ,对得到的频谱求镜像抑制比(即频域内的信号与信号镜像的幅度比) ,通过镜像抑制比和幅度一致性,可求出接收机的I和Q两路分量之间的相位正交性。-IQ receiver for the two most important parameters, namely I and Q components of two-way consistency between the amplitude and phase orthogonality may be adopted calculated using the following method: to I, Q 2 signals, respectively for FFT, to find a frequency domain signal amplitude, can be considered as two-way component caused by the range of 1 the I, Q 2 signals into one complex signal for FFT, the spectrum demand of the received image rejection ratio (ie, frequency domain signal and magnitude of the signal mirror ratio), through the image rejection ratio and extent of consistency, the receiver can be derived I and Q phase between the two-way component orthogonality.

Visual C++ MFC扩展编程实例，全书提供了大量VC的编程实例，旨在帮助读者较为全面地掌握VC编程知识、技巧和方法。-Visual C++ MFC extension of programming examples, the book provides a large number of VC programming examples to help readers grasp the VC more comprehensive programming knowledge, skills and methods.

ArcObject高级教程为开发者提供了基于COM组件的应用定制思路和方法。-ArcObject High handbook for developers to provide a COM-based application customization ideas and methods.

一本介绍SUSE LINUX的不错入门书籍，值得与大家分享！-SUSE LINUX introduce a good entry-book, it is worth sharing with everyone!

一些实用的METLAB程序，方便直接使用-METLAB a number of practical procedures to facilitate the direct use of

深入java虚拟机第二版，非常好的一本书。-Java virtual machine, the second edition of in-depth, very good book.

电磁场理论是一个基本的课程，电气和计算机工程专业的学生是需要采取以获得基础物理理解和遗产的字段，将占据他或她的职业生涯为几个几十年之后毕业。获得赞赏法律的性质，指导和限制的最小的计算机芯片的速度仍然是关键，因为这个速度方法是极限。与许多变化都发生在本科课程的快速发展的新的技术，因此额外的课程，它是共同找那只有一个路线在电磁理论是现在所需的学生。然而，大多数的学生是"精明的电脑"和被介绍给在他们前面的课程中使用了 MATLAB 和动机是由其创建的图片在计算机屏幕上，可以帮助说明复杂的物理现象的能力。

WinCE嵌入式系统实验指导，可供初学着使用 -WinCE Embedded System experimental guidance for the use of beginners

VB的电子书籍很使用-VB is the use of e-books

Learning Wireless Java is for Java developers who want to create applications for the Micro Edition audience using the Connected, Limited Device Configuration and the Mobile Information Device Profile (MIDP). These APIs specifically for devices such as mobile phones and pagers, allowing programmers to create MIDlet applications. This book offers a solid introduction to J2ME and MIDP, including the javax.microedition classes, as well as classes surrounding the features of the various platforms that the J2ME supports.