user-agent(UA)
http://www.966266.com/special/ua.html
http://blog.sina.com.cn/s/blog_637040180102e8by.html
http://www.ua123.net/index.php
出处:http://cnblogs.com/daishuguang
http://www.966266.com/special/ua.html
http://blog.sina.com.cn/s/blog_637040180102e8by.html
http://www.ua123.net/index.php