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

• Purification of middle and high viscosity of waste oils from compressor was studied.
  对中、高粘度废压缩机油的净化进行了研究。
• 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。
• Water-soluble polysaccharide was isolated and purified from Artemisia anomal using techniques of extraction precipiation, and purification.
  对奇蒿的水溶性多糖成分进行了分离提取及成分分析。
• 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
• This would not have been possible without high-throughput protein production and purification capabilities.
  这需要很高的蛋白产量和纯化能力。
• A simple purification method for crude tea saponin was described.
  对粗茶皂素的提取纯化工艺进行了研究。
• 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。
• 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。
• The purification of lac red pigment using macroporous absorption resin was investigated in this paper.
  研究大孔吸附树脂吸附精制紫胶红色素的工艺。