读取IEEE标准格式，并解析。将读取信息用图形界面可视化。-Read the IEEE standard format, and parsing. Will read the information visualization with the graphical interface.

计算诺特方程求解平面纵波入射到水平界面时的纵波反射系数与转换波反射系数 matlab图形化界面，输入上下两层介质的纵横波速度与密度即可，使用方便-Knott equations to calculate longitudinal wave reflection coefficients and converted wave reflection coefficient matlab graphical interface, enter the upper and lower layer

利用基于PSCAD的图形化编程界面，处理直流输电问题-Based on PSCAD use graphical programming interface, deal with the problem HVDC