libpng

一些简单的小例子，书上的例题代码，简单易懂，谢谢(Some simple examples, the book s example code, easy to understand, thank you)

风靡全球的非接触IC卡（即感应卡）的应用越来越广泛，如能配上通用非接触IC卡读写器，你就可以对非接触IC卡进行所有操作了。下载后运行windome，默认密码为wangxia。-Popular around the world non-contact IC card (that is, proximity card) the application of more and more widely, such as with GM to non-contact IC card reader, you can of non-contact IC cards of all operations. After downloading run windome, default password for wangxia.

用于仿制图章，仿制电子章，骑缝章，公务章(Used for imitation stamps, imitation electronic chapters, riding stitches, business chapters)

说明：  用于模拟fluent中吸附脱附的case，其中吸附脱附过程的传热传质需要自己使用udf(Case for simulating adsorption and desorption in fluent, and the heat and mass transfer in the process of adsorption and desorption should be declared by UDF)

说明：  vscode2019快捷键说明文档大全英文版，非常好用(Vscode2019 shortcut key description document in English, very easy to use)

计算CRC校验和,可以计算modbus规约/CDT规约/DISA规约/DF1规约/DNP规约/1801等规约的校验和.-and CRC calculation, modbus connection can be calculated Statute/CDT Statute/DISA Statute/DF1 Statute/DNP Statute/18 01 of the Statute, such as checksum.

说明：  超宽带探地雷达回波形成双曲线，对双曲线灰度图进行matlab仿真，模拟回波图象（自己写的，很水）(The echo of UWB GPR forms hyperbola. The hyperbola gray-scale image is simulated by MATLAB to simulate the echo image)

国外的一篇关于旋转机械故障诊断的博士论文，很难找的一篇好论文！(Abroad a doctoral thesis about rotating machinery fault diagnosis, and be helpful for some friends!)

说明：  直插式电阻电容封装与尺寸图解(20190724083559)(Direct-plug Resistance Capacitance Packaging and Dimension Diagram (20190724083559))

eFAST全局敏感度分析matlab程序，可设置自己的参数(EFAST global sensitivity analysis matlab program can set its own parameters)