说法不一,参考一下以下网站吧http://www.v021.com/Article/article08/article08003/article080033/200603/31300.htmlhttp://www.tianya.cn/new/publicforum/Content.asp?strItem=funinfo&flag=1&idArticle=131938http://post.baidu.com/f?kz=58823363http://www.520de.net/archiver/?tid-101007.html
没有~