transition-metal elements

• 过渡元素

transition-metal elements的用法和样例：

例句

1. 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新价态电负性和化学键的离子性的方法。
2. Except for the transitional elements, valency electrons are in the outermost electron shell.
   除去过渡元素外，价电子位于最外面的电子层。