impurity是什么意思？

impurity

英[ɪmˈpjʊərəti] 美[ɪmˈpjʊrəti]

• n. 污点，污染，掺杂，不纯，不道德，罪恶，混杂物，粗劣品；

复数：impurities;

例句

• 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.
• An on line concentration technique was developed to determinate trace impurity in Zolmitriptan and Mexitil. 利用在线富集技术测定药物佐米曲坦和盐酸美西律中的痕量杂质.
• Reasons of forming first cracks were foundry lacuna, impurity gathering , lard exiting. 铸造缺陷 、 杂质元素偏聚和夹杂物的存在是形成早期裂纹源的原因.
• This impurity must be purged away after death. 这种污秽应该在死后加以净化.
• The oxygen reacts 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 doped during epitaxy will diffuse in the epitaxial layer and even into the substrate. 在半导体器件制造的外延工艺中,外延生长时通常要掺入杂质.
• Searches in the impurity clues in the water - ice dominated plumes and surface ejecta are progressing. 科学家持续不断的研究这些由水冰主宰的羽状烟柱及表面喷发物,来寻找水存在的可能性.
• Complete crystal shape, high diaphaneity and low impurity. Suitable for circular saws, frame saws and geological broach. 晶体完整, 透明度高,杂质含量低,晶形与晶体强度性能优越. 使用于圆锯切片 、 框锯切片、地质钻头.
• It is found that the dispersing, impurity removal and chelating effect of acid help gold cyanidation. 研究结果表明,柠檬酸的分散 、 除杂及螯合作用有助于金的氰化浸出.
• Conclusion: The natural Harvest clarifier can substitute ethyl alcohol in the procedure of removing the impurity. 结论: 澄清剂法可代替乙醇法用以除杂质.

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  杂质;不纯物质
  Impurities are substances that are present in small quantities in another substance and make it dirty or of an unacceptable quality.
  例句
  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。
• N-UNCOUNT
  淫乱;不贞
  Impurity is the state of being no longer pure, especially sexually pure.

英英词典释义

• Noun
  1. worthless material that should be removed;
  "there were impurities in the water"
  2. the condition of being impure

行业词典

• 物理学： 杂质；
  电工： 杂质；