例句與用法

1. except for the transitional elements, valency electrons are in the outermost electron shell .
   除去過渡元素外，價電子位于最外面的電子層。
2. it allows to create models of electron shells of elements with the help of a similar graphic matrix
   基于相近的圖陣，可使電子殼層的填充方式模式化。
3. through analysis on the structure of valence electron shell, the atom radius, the bonding orbital and other important parameters, this paper discusses the irregularity in the second circle of nonmetal elements and the irregular courses
   摘要本文通過對第二周期元素價電子層結構、原子半徑、成鍵軌道及其重要參數(shù)的分析，討論了第二周期非金屬元素的不規(guī)則現(xiàn)象，并且分析了產生這些不規(guī)則性的原因。