the-four-order-Runge-Kutta-method.

液滴在壁面上流动的程序 可以用 tecplot画图 效果很好(The flow of the liquid drop on the wall of the program can be used to draw the effect of Tecplot is very good)

用VC做的一个水泵的图..图中圆形水泵有渐变效果!(Using VC do a water pump picture... Figure in a circular water pump gradual change effect!)

手动绘制点，自动生成样条曲线，可以拖动修改点来修改样条曲线(Manually plotting points, automatically generated spline curves, you can drag the modified point to modify the spline)

VC动态绘制图像 真的 很好(VC dynamically drawn image very good)

PSCAD做的风力机模型，嵌入了3维风力特性曲线，动态调节转矩与转速。(PSCAD do wind turbine model, embedded in the 3 d wind characteristic curve, dynamic torque and rotational speed adjustment.)

DCAC INVERTER MODELLING BY PSCAD/EMTDC

电力系统绘图程序源码,对开发GIS系统的程序员有一定的帮助(VC++ electrotic DRAWING PROGAM)

说明：  几个常用的visio模具，想用的下载来用吧(Several commonly used Visio molds. Download them if you want to use them)

AUTOCAD 程序员使用的，ARX图纸数据结构显示(AutoCAD programmers using the data structure ARX drawings show)

off 转stl ，很好的转换软件源码。实现了off三维格式向stl三维格式转换，可用于CAD、ProE等软件对接。( Turn off to stl, good conversion software source code. Off to achieve a three-dimensional format stl three-dimensional format conversion, it can be used in CAD, ProE and other software docking.)