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

• Study on the Extraction and Purification Processing of Total Flavones in Onionskin;
  本文对洋葱皮萃取物中黄酮类化合物的成分及含量进行了分析研究。
• This paper mainly summarizes the recent progresses in the medicinal function and separation and purification technology of alkaloids.
  本文主要对药用生物碱的应用及其分离纯化技术研究进展进行综述。
• 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 electric control system of the equipments for converter smoke purification and gas recovery is introduced.
  介绍了转炉烟气净化及回收设备的电气控制系统。
• Author has introduced the technical features and the present technical progress of purification process of low temperature methanol washing;
  介绍了低温甲醇洗净化工艺的技术特点和近期技术进展；
• 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 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。
• 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。
• 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。
• Purification process and attentions are introduced.
  介绍了清洗的过程和注意事项。