This paper shows that two problems on windy graphs are NP-complete and strongly NP-complete and that they remain NP-complete and strongly NP-complete even if the given windy graphs are planar.
本文证明了风向图上两问题是ＮＰ－完全的和强ＮＰ－完全的。
The 48 h air mass back trajectory map provided plenty of detailed .
48h反向风迹图提供了大量详实的气象信息,结合ρ(TSP),ρ(Pb),w(Pb)和同位素丰度比的数据,可用于综合表征铅污染的状况。