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Sex apparently can help the brain grow, according to new findings in rats.Past findings had shown that stressful, unpleasant events could stifle brain cell growth in adults. To see if pleasant albei..
转自：http://blog.sina.com.cn/s/blog_64ac3ab10100ges2.html 一、有限状态机引子让我们先来看几个简单的概念：状态 - 系统的基本数学特征。状态机 - 一个离散数学模型。给定一个
