矩阵求逆，经典算法，主元高斯全左右弗兰…

一个简单的卡巴斯基的安全升级的方法 -Kaspersky a simple way to upgrade the safety

可用于射频卡读写基于MS VC6.0开发的源码（VC6.0）.rar-Radio frequency card reader source (VC6.0). Rar

一个C++控制台的井字过三关小游戏,是大家学习的好材料-Tic-Tac-Toe Plays the game of tic-tac-toe against a human opponent Uses pointers instead of refernces for function parameters

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软件测试里面的一种测试内存的方法和一种无聊的东西-software testing inside a memory test methods and a silly things

比尔盖茨的演讲，共同聆听伟人的讲话，领悟其中的-Bill Gates

基于tinyxml，使用C++开发的XML文件处理程序，目前主要是可以修改，有兴趣的话可以继续添加

本人通过特殊途径获得的胆结石医学图片,对广大医学图象研究的人员有用-I through special access to medical images of gallstones, the general medical image research useful

或许大家都设计过数据库,也为表定义过主键,今天我想阐述的是,应该如何正确的设计一个主键,在以往的一些资料中,都没有提及到主键设计的原则.我为此总结了一下: -you might have designed the database, as well as table-defined primary key, and today I would like to explain is that How should correct the design of a primary key, in the past some of the information. no mention of the primary key design principle. I summarize this for a moment :

在控制系统中，由于某些系统不能直接实现所期望的性能，因此需要用系统校正的方法使其具有所期望的性能。本程序是基于频域法的串联校正，分为超前校正和滞后校正。-In the control system, because some systems can not directly achieve the desired performance, requiring a systematic method of correction to have the desired performance. This procedure is based on the frequency-domain method of series correction, divided into ahead of correction and lag correction.