chemical bond 托福

A method to calculate new valence electronegativity and the ionicity of chemical bond of the transition metal elements is also presented here.

提出了计元素价态共价半径的公式;提出了计元素新价态电性和化学键的离子性的方法。

The essential feature of monomer molecules is the ability to form chemical Bonds (see Bonding) with at least two other monomer molecules (polyfunctionality).

单体分子的基本特性是至少个其它单体分子形成化学键的力(多功性)。