双向连通图digraph: n. (读作一音的)复合字母〔如 ch, ea〕。 acyclic digraph: 无圈有向图, 非循环有向图arc-digraph: 弧有向树associated digraph: 伴随有向图balanced digraph: 平衡有向图下载手机词典可随时随地查词查翻译