impurity

n.

污点，污染；掺杂，不纯；不道德，罪恶；混杂物，粗劣品

复数：impurities

mechanical impurity机械杂质

impurity element杂质元素

1. Impurity of the water made it unfit to drink.
   因为水质不纯净，所以不能饮用。
2. The impure mixture with impurity is purified.
   含杂质的不纯混合物被提纯。
3. There are some impurities in food.
   食物中有一些杂质。
4. Workers are removing impurities from silver.
   工人们正去除银中的杂质。
5. The oxygen react vigorously with the impurity in the iron.
   氧气与铁中的杂质发生剧烈的化学反应。

Impurity quantum phase transitions
Impurity Conduction at Low Concentrations
Charged Impurity Scattering in Graphene
The theory of impurity conduction
Wave Functions for Impurity Levels
Correlated charged impurity scattering in graphene.
Electron spectroscopies for Ce compounds in the impurity model
Origin of p-type doping difficulty in ZnO: The impurity perspective
The numerical renormalization group method for quantum impurity systems
Water-assisted highly efficient synthesis of impurity-free single-walled carbon nanotubes