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

• 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。
• The purification conditions of photosynthetic bacteria on farming water were studied.
  本文报道了光合细菌净化水质条件的研究结果。
• If you are unsure about the purity of the water you have collected then use a water purification method.
  如果你对收集到的水的纯度不放心，可以采用一些方法对水进行净化。
• In this paper, the magnetite purification and two methods for obtaining ultrafine magnetite powder were introduced.
  介绍了磁铁矿的选矿提纯方法和获得磁铁矿超细粉的两种途径。
• Separation and purification of Human-like collagen I ( HCB I) and its functional properties were researched in this paper.
  本文对类人胶原蛋白I（HCBI）的分离纯化及其功能特性进行了研究。
• 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 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。
• 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。
• Study on purification and characterization of plant-esterase for detecting the residues of organophosphate pesticides;
  本研究基于酶法分析中的酶抑制原理，对农药残留检测用植物酯酶制剂进行研究。
• 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。