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椭圆拟合，用于在jpg格式的图片上寻找椭圆，并进行拟合-Ellipse fitting to the picture in jpg format to find oval, and fitting

运用New-Rapshon方法计算线接触常温弹流润滑程序，并绘制出压力和膜厚曲线图(Calculated using New-Rapshon EHL line contact process at room temperature, and draw out the pressure and film thickness curve)

说明：  模块化多电平换流器(modular multilevelconverter MMC)已成为柔性直流输电系统的首选换流器拓扑。我国已建成的上海南汇柔性直流工程、南澳三端柔性直流工程、舟山五端柔性直流输电工程以及正在建设中的厦门柔性直流工程都采用MMC结构。国际上SIEMENS已建成的美国跨湾工程(Trans Bay Cable Project TBC)和法国一西班牙联网工程(INELFE工程))都采用MMC结构。同时，ABB公司提出了一种级联两电平结构(cascaded two level CTL)，其本质仍为MMC，并且ABB后续建设的数项柔性直流工程都采用CTL结构。因此，MMC已由最初的低压、小容量示范工程向高电压、大容量方向快速发展，展现出很好的发展前景。(Modular multilevel converter (MMC) was first proposed and patented by Professor R. Marquardt in 2001. It consists of several sub modules (SM) with the same structure. The sub module structure can be divided into three types: half H-bridge, full H-bridge and double clamp sub module. Modular multilevel converter (MMC) has shown a very important engineering application prospect.)

铱星在stk软件中的场景建模包含66颗星6个轨道(iridium scenario model)

dos基础教程 很全面的 希望大家下载-dos Directory is a comprehensive basis of hope downloading

Programming Examples of CodeWarrior.

空间前方交会程序，采用点投影系数法，matlab代码，简单易读运行速度快！(Space intersection program, using point projection coefficient method, matlab code, easy to read, fast operation!)

简单的文件清理代码，只需要轻轻点击马上讲系统里的不需要的文件清理干净。-Simple documents clean code, only gently on the system of right about the document does not need to clean.

win32编程中常用的API，对于学些WIN32编程非常有用(win32 programm API datasheet, it is very useful for developer of win32)

用QT编写的传感器测试系统界面，可用于二次开发(Sensor test system interface written with QT can be used for secondary development)