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。
• 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。
• Isoamyl butyrate was synthesized from butyric acid and isoamyl catalyzed by composite solid acid as the catalyst.
  用丁酸和异戊醇为原料，复合固体酸为催化剂合成了丁酸异戊酯。
• Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.
  以单质碘为催化剂，通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。
• In this paper, with solid superacid as catalyst for isoamyl propionate synthesis was studied.
  本论文用固体超强酸为催化剂对丙酸异戊酯的合成进行了研究。
• This process relies on a catalyst of high selectivity and week activity.
  这过程所靠的是一种高选择性和低活性的催化剂。
• In-situ thermal degrdn. of a com. dehydrogenation catalyst in a fixed-bed reactor is studied exptl.
  用实验研究了在固定床式反应器中一种普通脱氢用催化剂的实时热降解。
• 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。
• 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 Development and Application of Production Control System for Catalyst
  催化剂生产管理系统的开发和应用研究