This paper introduce the method which deals the operate nature of set with Cartesian product, and it is similar to Venn diagraph in set theory.是什么意思_This paper introduce the method which deals the operate nature of set with Cartesian product, and it is similar to Venn diagraph in set theory.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句