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.

提出了计算过渡元素态径的公式;提出了计算过渡元素新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).

单体分子的性是至少能与两个其它单体分子形成化学键的能力(多功能性)。