Talk:文氏图
维基百科,自由的百科全书
Hello, I've been linked here with Venn diagram, but this here is not a venn diagram, it's a euler circle, a venn diagram of three objects has 2n cells with one complement, whererfore you need a frame- greetings roomsixhu, from german wikipedia
已经从英文版中翻译过来了,其中没有原则性的问题了。寒蝉退士 07:40 2005年11月29日 (UTC)