知识贝壳
知识贝壳
所属栏目：英汉双解化学
A bond formed between at-oms of a metallic element in its zero oxida-tion state and in an array of similar atoms.The outer electrons of each atom are regar-ded as contributing to an ‘electron gas’,which occupies the whole crystal of themetal. It is the at ......（本文共 591 字 ） [阅读本文] >>