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一个含光伏风电的小系统的pscad模型，是用PSCAD软件做的。(One containing the system pscad photovoltaic wind power model, is to do with the PSCAD software.)

ABAQUS 平面三角形单元 uel子程序(ABAQUS subroutine flat triangular element uel)

用四阶龙格-库塔法求系统在U单位阶跃输入下该系统的响应曲线(Using the four order Runge Kutta method to find the response curve )

CAD批量打印源码程序，例程结合易语言应用接口支持库、拖放支持库、扩展功能支持库，创建Autocad.Application对象，实现CAD对象的属性、方法，可以批量打印。(CAD batch printing source programs, routines combined with easy language support library application interface , drag and drop support libraries , extensions support library , create Autocad.Application object implementing the CAD object s properties , methods, you can batch print .)

图形学画图,直线,圆,多边形,曲线,随手画,文本,裁剪(Graphics drawing straight lines, circles, polygons, curves, hand painting, text, cutting)

服装CAD源代码，可以进行bspline的打断分割割，裁减操作，而且还可以解析shx字库，进行标注等。 (Garment CAD source code can be bspline split the interrupted cut cut operation, but also can resolve shx font marked.)

STATCOM pSCAD模型 ( this is STATCOM model)

可拖拽的四边形网格扫描转化与交互式编辑 含有界面设计，画布canvas的定义，和生成、填充图像的drawPoint，drawLine，drawCircle等绘制方法； 含有单个四边形扫描转化，全局网格页面生成，鼠标点击及拖拽响应事件等方法；(Scan transformation and interactive editing of dragged quadrilateral grids)

Bresenham algorithm (realization was created by russian student)

绘画出三阶的贝塞尔曲线, 求出曲线上各点的曲率和半径,可用于弯道设计(Drawing out the order of the Bezier curve, find the points on the curve and radius of curvature, can be used for curve design)