Matlab Book Biomedical engineering programs have exploded in popularity and number over the past 20 years. In many programs, the fundamentals of engineering science are taught from textbooks borrowed from other, more traditional, engineering fiel

词频统计是一个重要的工具，你可以统计文章中词出现的频率来真正实现每个词的含义-word statics,you can use the soft ware to check the number of the article.such as a,b.c.d.