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超声兰姆波用于无损检测，求解其相速度频散曲线，群速度频散曲线(ultrasonic lamb wave)

VSP褶积模拟模型，通过时距曲线模拟vsp褶积模型(VSP convolution simulation model, through simulation vsp distance curve convolution model)

这是国外的同行编写的画图板程序，感觉比陈建春的要好些，说实话研究了半天，发现国内的cad水平低不是因为国内的人笨，主要是国外的cad技术不能很快的传递到国人手中，总是参考陈建华等水平有限，工程水平差的书籍造成整体水平低，书中没有详细的流程图，和软件设计思路，而且代码错误连篇。(This is the foreign counterparts of the drawing board to prepare procedures, CHEN Jian-chun than feeling the need to better tell the truth for a long time study and found that low levels of domestic cad because people are not stupid, mainly abroad cad technology should not quickly delivered to the the hands of the people always refer to Chen Jianhua, such as the limited level, engineering level difference caused by the overall level of books low, the lack of a detailed flow chart of the book, and software design, and code errors pack.)

stanford大学完好性项目中用来计算PL、AL并表示可用性关系的画图程序，也称为Stanford Plot(VPLSTAT(FNAME, PATH, VAL1, VAL2) reads the given file of TMS Vertical Protection Limit statistics and plots the color coded histogram. In addition the regions of integrity failures and unavailability are shown. Multiple files can be combined by putting in vector of strings for the FNAME)

对给定的离散点，先拟合成B样条曲线，再求B样条曲线曲率(The program can help you to get the curvature of the B-spline curve from discrete points.)

配电箱正视图，用2010CAD画的，通过图形可以看出每个部分的功能(A front view of the distribution box, with 2010CAD painting, it can be seen through the pattern of each part of the function)

cad提取文字坐标 能提取文字所在点的坐标值并保存到text中 (cad text extraction coordinates coordinates of the text can be extracted and saved to the point where the text of the)

GMT是一个很强大的地学绘图软件，应用于很多专业，很实用，这是一篇很好的GMT入门教程(GMT is a very powerful geoscience mapping software, used in many professional and very practical, this is a good introductory tutorial GMT)

d2d simulator matlab code

ACIS的动态链接库，是AUTO CAD的几何内核(The dynamic link library ACIS is AUTO CAD geometry kernel)