标定可迁有向图

[计] labelled transitive digraph

biāo dìng kě qiān yoǔ xiàng tú ㄅㄧㄠ ㄉㄧㄥˋ ㄎㄜˇ ㄑㄧㄢ ㄧㄡˇ ㄒㄧㄤˋ ㄊㄨˊ