The band structure reveals the form of the impurity levels due to the substitutional impurity in semiconductors. 摻雜模型的能帶結構顯示，由於在半導體母體中進行雜質原子取代而形成了雜質能級。
In these low-dimensional structures, besides coulombic interactions, the impurity levels are affected by confining potentials and the dimension of the structures. 在這些低維半導體結構中，除了庫侖相互作用外，雜質能級還受限制勢和結構尺度的影響。
Magnesium-hydroxide powder features high purity, well distributed particle size, extremely low in impurity. 氫氧化鎂純度高，顆粒均勻，重金屬等雜質含量低，可在多個領域廣泛應用。
If a material previously considered to be pure can be resolved into more than one component, that material can be redefined into new terms of purity and impurity. 如果之前被認為是純凈的物料可以被分解成不只一個組分，那麼那個物料可重新定義為純度和雜質的新術語。
