实现一个字符串类的若干函数的操作

清华大学的博士论文面向大规模图像库的索引和检索机制研究-Tsinghua University doctoral dissertation-oriented large-scale image database indexing and retrieval mechanisms

Read this to understand basics about software testing.

Sun J2EE 宠物店（包括源代码及参考书）-Sun J2EE pet shops (including source code and reference books)

DSP开发练习的极好的范例程序（经典例子程序）-practice and the development of DSP an excellent example (classical examples of procedures)

仿真了LMS算和和牛顿算法以及最速下降算法有图形可以清楚的看到几个算法的收敛速度的快慢-Calculation and simulation of the LMS and Newton algorithm and the steepest descent algorithm can clearly see several graphical convergence of the algorithm for the pace of

用C++实现的简易终结者小游戏，可以运行， 不过功能很简单-C++ implementation of the simple Terminator game

几个入门的小站，适合入门学习用的-some webs，only for starter・・・・・・・・・・・

另一新版ajax组件，让asp.net开发更加good-Another new version of ajax components, so that asp.net development of more good

含有移相器的配电网潮流计算程序，非常适用，我们团队自已开发并一直在使用。-Contains a phase shifter distribution power flow calculation program, is very applicable to our own development team and has been in use.

无刷直流电动机需要多种电压电平来控制转速：0V 使电动机停转，5V 使电动机以最大转速运转，而在0V和5V之间的电压则使电动机以较低的转速运转-The needs of a wide range of brushless DC motor voltage level to control the rotational speed: 0V stop the motor switch, 5V maximum speed of the motor running, and in between 0V and 5V voltage while the motor running at low speed