purification

英 [ˌpjʊərɪfɪ'keɪʃ(ə)n]

美 [ˌpjʊrɪfə'keɪʃ(ə)n]

n.  提纯; 斋戒; 清洗; 净化(作用)

复数：purifications　

TOEFL化学

BNC.15744 / COCA.15434

柯林斯词典

• VERB 使纯净；净化
  If youpurifya substance, you make it pure by removing any harmful, dirty, or inferior substances from it.
  1. I take wheat and yeast tablets daily to purify the blood...
     我每天服用干酵母片以净化血液。
  2. Only purified water is used.
     只使用纯净水。

英英释义

noun

• the act of purging of sin or guilt
  1. purification through repentance
• a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites
  Synonym:purgation
• the act of cleaning by getting rid of impurities
• the process of removing impurities (as from oil or metals or sugar etc.)
  Synonym:refiningrefinement

双语例句

• Sodium chloride and hydrochloric acid are often used to regenerate spent ion exchange resins used in water purification.
  氯化钠和盐酸常用来再生水净化中用的废的离子交换树脂。
• Experimental study on the air cleaner's purification effect for indoor formaldehyde, ammonia and TVOC
  空气净化器对室内甲醛、氨气和tvoc净化效果的实验研究
• The new technology for ammonia distillation in coke oven gas purification system and its characteristics are introduced.
  介绍了焦炉煤气净化系统蒸氨新工艺技术及其特点。
• Extraction, isolation, purification and functional properties of Tremella polysaccharides were studied in the paper.
  本实验研究了银耳多糖的提取、分离、纯化及其功能性质。
• High-quality cellulose can be obtained from wood through pulping and subsequent purification.
  高质量纤维素可通过木头成浆和后续提纯。
• Cloning, expression, purification and functional study of human EGF in E.coli.
  克隆、表达、纯化和人表皮生长因子在大肠杆菌中的功能研究。
• The process technology, ACE inhibitory activity and purification of ACE inhibitory peptide of vinegar-egg were studied.
  本实验对醋蛋的浸泡工艺、ACE抑制活性和ACE抑制肽的分离进行了初步研究。
• Problems and solutions of the separation and purification process development and industrial production process of fermentation drugs;
  发酵药物分离纯化工艺开发和工业生产过程中遇到的问题和解决方法；
• The purification and assay methods for pectic enzymes are differed with various strains.
  由于不同菌种产生的果胶酶成分复杂程度不同，分离纯化手段和分析方法也不相同。
• Isolation and purification of cichoric acid from extracts of Echinacea purpurea by polyamide column chromatography;
  目的采用聚酰胺柱色谱分离纯化紫锥菊提取物中菊苣酸。