covalence elongation共价延伸方式
covalence radii原子共价半径
covalence bond共价键
covalence function共价函数
imine covalence亚胺结构
covalence electron共价电子
covalence adsorption共价吸附
double covalence双共价;双共价英语
polar covalence极性共价;翻译;极性共价英语
N(名词) the formation and nature of covalent bonds 共价性