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美国Richard O.Duda编著的pattern classification，是学习模式识别的好书，里面含有中英文两个版本，希望对大家学习有帮助！(The United States, Richard O.Duda compiled pattern classification, learning pattern recognition book, which contains two versions of Chinese and English learning!)

超声变幅杆原理和设计,详细介绍了超声变幅杆的原理及设计，pdf电子书籍(the pricinple and design of the ultrasonic horn)

ActionScript 值得推荐的actionscript入门教程(ActionScript cook book)

QT4的中文参考手册，chm格式的，从实例讲，简明易懂(QT4 Chinese reference manual, chm format, from the examples of speaking, concise and understandable)

编程珠玑中文第二版.pdf(包括源码) 本书是计算机科学方面的经典名著，原名Programming Pearls Second Edition 书的内容围绕程序设计人员面对的一系列实际问题展开。作者Jon Bentley 以其独有的洞察力和创造力，引导读者理解这些问题并学会解决方法，而这些正是程序员实际编程生涯中至关重要的。本书的特色是通过一些精心设计的有趣而又颇具指导意义的程序，对实用程序设计技巧及基本设计原则进行了透彻而睿智的描述，为复杂的编程问题提供了清晰而完备的解决思路。本书对各个层次的程序员都具有很高的阅读价值。. (Programming Pearls Chinese second edition. Pdf (including source code) This book is in computer science classics, formerly Programming Pearls Second Edition Contents of the book focus on program design were faced with a series of practical issues. Author Jon Bentley its unique insight and creativity, to guide readers to understand the issues and learn solutions, which is what the programmer actual programming career essential. The book features through some interesting and well-designed program is instructive, for practical programming skills and basic design principles and wise conduct a thorough description of the problem for complex programming provides a clear and complete solution ideas. Book for all levels of programmers have a high value of reading. .)

twincat PLC编程手册，学习编程的入门资料，非常适合自学！(handbook of twincat PLC)

说明：  dive into python book for linux

用于ANSYS进行模态分析的代码，可以直接运行得到坎贝尔图(ANSYS code for modal analysis can be run directly get Campbell diagram)

说明：  包括Hypermesh的使用教程和基本案例，用于有限元的网格划分，尤其是广泛使用的非线性有限元软件Abaqus。(Including Hypermesh tutorials and basic cases, used for finite element meshing, especially the widely used nonlinear finite element software Abaqus.)

说明：  介绍了ACM12864J液晶显示模块的特性与功能,提出ACM12864J与SPCE061A微控制器的硬件接口设计，以及在此设计基础之上实现字符显示、汉字显示、图形与曲线显示的方法与编程技巧(ACM12864J introduced the characteristics of liquid crystal display module and function, the ACM12864J with SPCE061A MCU hardware interface design, as well as the realization of this design based on the character display, character display, graphic display and curve method and programming skills)