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

• 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。
• 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。
• 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
• And the thin impurity particles are avoided when large current continuously attacks the deposits in the filter.
  并且避免了力道较大的水流持续直接地冲击过滤件内的沉淀而形成细小的杂质颗粒；
• 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。
• The oxidizing roast of high impurity ferromolybdenum was studied by using rotary kiln.
  采用回转窑加热的方法对高杂质钼铁（合金）氧化焙烧进行了研究。
• Vitriolic impurity is contained normally in the sewage that vitriolic factory discharges.
  硫酸厂排放的污水中通常含有硫酸杂质。
• Influence of Impurity on Surface Morphology and Growth Kinetics of a Lysozyme Crystal
  杂质对溶菌酶晶体表面形貌和生长动力学的影响
• Rinse under cold water to wash away the blood and impurity.
  再用冷水冲去血沫和杂质。
• 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。