引入了互补余因式对、正规双图和可行撕裂点集的概念。
The concepts of complementary cofactor pairs, normal double-graphs and feasible torn vertex sets are introduced.
回想一下我们为双原子创建的分子轨道图。
Recall the molecular orbital diagrams we created for diatomics back.
下图是波音的概念图，它也使用了V形的双尾部，与洛克西德的飞机一样，它也把引擎安置在机翼上部。
The Boeing concept, below, also USES a V-shaped twinned tail section, and like the Lockheed jet, it also places the engines on top of the wings.
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