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价态共价半径的公式;提出了计算过渡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能与两个其它单体分子形成化学键的能力(多功能性)。