这篇文章详细介绍了狄利克雷分布，贝塔分布，二项分布，多项分布，很全面
This article details the Dirichlet distribution, beta distribution, binomial, multinomial distribution, very comprehensive (2014-12-01, WORD, 124KB, 下载22次)
五金件手册,钣金件展开.对于电箱和机械外观的设计,是很有帮助的.
Hardware manual sheet metal parts expand electrical boxes and mechanical design of the appearance, is very helpful. (2013-04-27, WORD, 222KB, 下载3次)
555时基电路的综合应用汇总，包括单稳态，双稳态，无稳态电路等等
555 time-base circuit of the integrated application summary, including a single steady-state, bi-stable, non-steady-state circuit, etc. (2009-09-28, WORD, 105KB, 下载8次)
lvs负载均衡，双机负载均衡，可实现linux下7x24不间断运行
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