经验价键理论
Empirical valence bond principle
价键性
character of valence bonding
价键电荷模型
model of charges at bonds
价键的电子理论
electronic theory of valence
配位共价键
coordinate covalent bond
coordination covalent bond
分子价键连接性指数
molecular valance connectivity index
分子轨道价键理论
Molecular orbital valence bond principle