实现云模型与分形的树模拟，用MATLAB和VB混合编程实现-achieve cloud model and fractal tree simulation with MATLAB and VB Programming

单自由度振动系统 基于MATLAB建模仿真,根据单自由度振动系统数学模型(Single degree of freedom vibration system modeling and simulation based on MATLAB, according to the mathematical model of single degree of freedom vibration system)

数模中的钻井问题的matlab源码,需要的下！很好的源码 很好(Mathematical model of drilling problems of matlab source code, need!)

这是瑞利信道德仿真模型,用matlab 写的,比较使用方便,,(This is moral simulation model of Rayleigh letter written in matlab, is easy to use,,)