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

• 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
• 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。
• 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。
• 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。
• Some impurity as well as bromine was brought by solid matter that smuggled with foam fog in flash steam.
  闪蒸气中雾沫夹带的固体物引入了溴等杂质。
• There is no impurity so impure as old age.
  都没有年龄大了那种不纯的杂质。
• 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。
• 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。
• There is an impurity in your product.
  你的产品中有杂质。
• 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；