covalency parameters共价参数
coordination covalency配位共价
covalency effect共价效应
double covalency双共价
bond covalency键共价性
graviton covalency引力子共价项
covalency parameter共价键参数
covalency-effect共价效应
double covalency factors双共价因子
N(名词) the formation and nature of covalent bonds 共价性