catalyst

英 [ˈkætəlɪst]

美 [ˈkætəlɪst]

n.  催化剂; 促使变化的人; 引发变化的因素

复数：catalysts　

CET6TOEFLIELTSGRETEM4TEM8计算机

Collins.1 / BNC.8852 / COCA.7915

牛津词典

noun

• 催化剂
  a substance that makes a chemical reaction happen faster without being changed itself
• 促使变化的人；引发变化的因素
  a person or thing that causes a change
  1. I see my role as being a catalyst for change.
     我认为我的角色是促成变革。

柯林斯词典

• N-COUNT 催化剂;诱因;诱导者
  You can describe a person or thing that causes a change or event to happen as acatalyst.
  1. I very much hope that this case will prove to be a catalyst for change...
     我非常希望这起事件能催生变革。
  2. He said he saw the bank's role as a catalyst to encourage foreign direct investment.
     他说，他认为银行就应该起到刺激外国直接投资的作用。
• (化学)催化剂
  In chemistry, acatalystis a substance that causes a chemical reaction to take place more quickly.

英英释义

noun

• something that causes an important event to happen
  1. the invasion acted as a catalyst to unite the country
• (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  Synonym:accelerator

双语例句

• The method of preparation of catalyst, compound ratio of activator and catalysis of charcoal active were studied.
  对催化剂的制备方法、活性组分的配比和以活性炭为载体的催化性能进行了考察。
• Latest advances and developing trend in copper-based CO low temperature shift catalyst are reviewed in this paper.
  本文详细介绍了铜基一氧化碳低温变换催化剂近几年来的发展概况和发展趋势。
• The influence of middle rare earth oxides on the activity of Pd catalyst has been discussed in this article.
  本文研究了中稀土氧化物对钯催化剂活性的影响。
• The solvent capacity of ionic liquid for alkane is important to he separation of the alkylate and the catalyst.
  而饱和烷烃在离子液体中的溶解能力对烷基化产物和催化剂的分离十分重要。
• Research situation of synthesis methanol catalyst abroad& at home was introduced;
  介绍了国内外合成甲醇催化剂的研究情况；
• What he said served ( or acted) as a catalyst for my change.
  他的话像催化剂一样促成了我的转变。
• Presents the performances and industrial application of TH-1 dehydrogenation catalyst.
  介绍TH-1型脱氢催化剂的性能及工业应用情况。
• And the relevant suggestion for developing trend of catalytic cracking process and catalyst is pointed out.
  对催化裂化工艺和催化剂的发展趋势提出了相关的建议。
• I very much hope that this case will prove to be a catalyst for change
  我非常希望这起事件能催生变革。
• The negative intense emotion is the University student's catalyst of the intense emotional criminal offence.
  消极的激情是消极情绪的积累，是形成大学生激情犯罪行为的催化剂。