impurity

英 [ɪmˈpjʊərəti]

美 [ɪmˈpjʊrəti]

n.  杂质; 肮脏; 不纯; 淫秽

复数：impurities　

CET6TOEFL化学

BNC.15794 / COCA.17928

牛津词典

noun

• 杂质
  a substance that is present in small amounts in another substance, making it dirty or of poor quality
  1. A filter will remove most impurities found in water.
     过滤器会滤掉水中的大部分杂质。
• 肮脏；不纯；淫秽
  the state of being dirty or not pure

柯林斯词典

• N-COUNT 杂质;不纯物质
  Impuritiesare substances that are present in small quantities in another substance and make it dirty or of an unacceptable quality.
  1. The air in the factory is filtered to remove impurities.
     工厂里的空气要经过过滤，以清除其中的杂质。
• 淫乱;不贞
  Impurityis the state of being no longer pure, especially sexually pure.

英英释义

noun

• the condition of being impure
  Synonym:impureness
• worthless or dangerous material that should be removed
  1. there were impurities in the water
  Synonym:dross

双语例句

• Alunite is a harmful impurity which is difficult to remove from kaolinite, and so is kaolinite in alunite ore.
  明矾石是高岭土中难以除去的有害杂质，高岭石也是明矾石矿石中的有害杂质。
• The size-dependent effect of energy and binding energy of hydrogen-like donor impurity quantum ring are calculated with B-spline technique.
  利用B样条技术计算类氢施主杂质量子环能级和束缚能的量子尺寸效应。
• The impurity elements on the surface of the silicon sample corroded were analyzed by an energy dispersive spectroscope.
  用能谱仪对腐蚀后的硅表层杂质元素进行分析；
• Microstructure investigation showed that the zirconia and impurity phases were dispersed in the BN layer matrix.
  显微结构分析表明，氧化锆和杂质相镶嵌在氮化硼层状基质中。
• This gaseous impurity is able to bring about metal corrosion and contaminating.
  这些气相杂质的存在会造成金属材料腐蚀，并污染环境。
• Study on the Determination of Trace Composition and Impurity Elements in Kaolin with ICP-MS
  ICP-MS法测定高岭土中微量成分及杂质元素的研究
• The effect of HCl, an impurity in flue gas, on the activity of the catalysts was evaluated.
  并考察了烟气中可能杂质氯化氢对催化活性的影响。
• Removing process of light and soft impurity that is medium and low density is introduced.
  介绍了煤中低密度轻软杂质清除的工艺过程。
• 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。
• The air in the factory is filtered to remove impurities.
  工厂里的空气要经过过滤，以清除其中的杂质。