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一本R语言函数详细解释大全，详细的介绍了大部分R语言所用到的函数(A detailed explanation of the R language function Guinness, a detailed description of the language used by the majority of R function)

css基础教程，是我在科大讯飞培训老师给的，入门很好的资料(failed to translate)

详细介绍了MATLAB求解偏微分方程的PDE工具箱。(PDEtool)

OllyDbg详细教程，一步步学习OllyDbg，进阶顶级黑客(OllyDbg detailed tutorial, step by step learning OllyDbg, Advanced top hackers)

Git中文版介绍，新手必备，老手参考。 目前所知的最好的中文Git介绍。(Git Chinese version of introduction, novice, veteran reference. Currently the best known Chinese Git introduction.)

说明：  IDL可视化分析与应用（随书程序） 西北工业大学出版 (IDL and application of visual analysis)

MARK点相关设计规范，非常实用的印制电路板设计文章(Points related to design specifications MARK, very useful article, printed circuit board design)

The Python 3 Standard Library by Example

MIT公开课程计算机体系结构 第四课MIT公开课程计算机体系结构 第四课(MIT公开课程计算机体系结构 第四课)

西门子仿真编程软件S7-PLCSIM V5.4，用于S7-300/400系列PLC程序的仿真(S7-PLCSIM V5.4 offers the following new features with this release: DP, Industrial Ethernet and PC Internal connection types supported in addition to MPI Formerly, S7-PLCSIM used a default connection of MPI, address 2. With S7-PLCSIM V5.4, you can browse STEP 7 projects and select a networked node for establishing a simulation connection. S7-PLCSIM simulates the CPU of the selected node, all nodes that belong to that CPU, and the subnet of the selected node. Increased number of blocks supported for simulation S7-PLCSIM supports a set of OBs, SFBs, and SFCs as described in the electronic manual and online help. Of these, some are NOPs that is, they do not perform any operation. With S7-PLCSIM V5.4, the number of blocks that are not NOPs has increased.)