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this is matlab code for read dxf file

构造函数实现雪花分形，但是MATLAB运行当迭代次数过多会存在不足，实现较慢！(Constructor to achieve fractal snowflake, but the MATLAB run when the number of iterations too many deficiencies to implement slow!)

汽车变速箱的扭震模型。可以用来描述变速器的振动特性，本人自己编写的。(very perferct model of the gear box.)

2d dct cofficient computation programs..

利用MATLAB编写了GM（1，1）预测模型的程序，方便人们直接使用该程序进行预测。(MATLAB prepared using GM (1,1) prediction model of the procedures for people to direct the use of the prediction process.)

说明：  实时比例导引三维弹道仿真(VC&Matlab混编).(Real-time three-dimensional proportional navigation trajectory simulation (VC )

说明：  AES加密算法中的S-盒及其MATLAB实现,S盒实现是MATLAB中的主要过程。(AES encryption algorithm in the realization of S-boxes and MATLAB, S box MATLAB implementation is the main process.)

输入某一点的应力值（6个），可以求出其主应力、主应力方向以及切应力值(Enter a point of stress (6), can find the principal stresses, principal stress direction and the shear stress)

PATH PLANNING TECHNIQUE USING RRT ALGORITHM

用matlab处理语音信号分帧，加窗的程序(Speech signal sub-frame window)