strong connected digraphs

• 强连通有向图

strong connected digraphs的用法和样例：

例句

1. Using matrix theory, we present a sharp upper bound on the spectral radius of digraphs and strongly connected diagraphs.
   摘要利用矩阵理论，给出了简单有向图的谱半径可达上界和强连通有向图的谱半径上界。