结构歧义性产生的主要原因，是有些化合物能够用多种都满足价键理论的结构式来表示和有的歧义结构不能用数学上的图来明确表示。
The main causes of the ambiguity are ( 1 ) some molecules can be represented by more than one chemical structures which all obey rules of Valence Bond Theory and ( 2 ) certain structures are not mathematically graphs .
价键结构式