节点导向有向图 node-oriented directed graph: 面向节点的有向图labelled node oriented directed graph: 标定的面向节点的有向图oriented path in directed graph: 有向图的有向通路directed graph: 定向图; 有向图directed graph undirected graph: 有向图无向图下载手机词典可随时随地查词查翻译