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

• In this paper, the synthesis of iso-butyl diurea by wet way with p-methylbenzenesulfonic acid as catalyst.
  对用对甲苯磺酸作催化剂湿法合成异丁叉二脲的反应进行了研究。
• 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。
• 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。
• 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。
• 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；
• The supported catalyst was systematically optimized with respect to catalyst dosage and calcination temperature.
  实验了催化剂的负载量和煅烧温度对催化剂活性的影响。
• In addition, the choices of the emulsifiers system and the catalyst are discussed.
  该部分着重讨论了复合乳化剂体系和催化剂的选择。
• Ethylene glycol monoether acetate are synthesized from acetic acid and ethylene glycol monoethyl ether with supported phosphotungstic acid catalyst.
  以醋酸和乙二醇单乙醚为原料，活性白土负载磷钨酸作为催化剂，合成了乙二醇单乙醚醋酸酯。
• The paper described the process method of recovering the metal palladium from waste TDI hydrogenation catalyst.
  阐述了从废TDI氢化触媒中回收贵金属钯的工艺方法。
• 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。