Factor theory is an important branch of graph theory, and fractional graph theory is a new research area which belongs to the intersectional subject of graph theory and fuzzy mathematics.是什么意思_Factor theory is an important branch of graph theory, and fractional graph theory is a new research area which belongs to the intersectional subject of graph theory and fuzzy mathematics.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句