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描述了混沌的序列的优选，如何利用均方根值进行优选。(Describes the preferred sequence of chaos, how to make use of root-mean-square value optimization.)

说明：  ftp线程实现包括在java语言中实现，实现很简洁，效率高。(FTP thread implementation is implemented in Java language, which is very concise and efficient.)

说明：  包括最长、最短欧式距离法、重心法（标准欧式、平方欧式、精度加权）、平均法、权重法等等(Including the longest and shortest Euclidean distance method, center of gravity method (standard Euclidean, square Euclidean, precision weighting), average method, weight method, etc)

说明：  通过KK关系计算介电常数、折射率、消光系数等等光学常数(Calculation of dielectric constant by KK relation)

是一个很好的ns洪范例子，对于初学者很有帮助-Ns is a good example Hongfan, very helpful for beginners

常用的API函数整理(commonly used API functions collate)

亚声速-超声速等熵喷管流动的CFD解法，运用python语言对方程的求解实现。(CFD solution for the flow of subsonic and supersonic isentropic nozzle,the solution of the equation is realized by using the python language.)

关于随机水文学的使用教材，便于读者们的自学(About the use of stochastic hydrology textbook, easy to readers who self-)

C++ primer 第四版课后答案，详细的给出了教材课后习题的答案(the book give the answer of C++ primer (version 4))

VB的程序，共享磁盘的。-VB, shared disk.