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

• 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。
• 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。
• 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
• Dichloropropanol was synthesized by chlorination of glycerol with hydrogen chloride under catalysis of organic acids and self-made inorganic catalyst.
  以甘油为原料，氯化氢气体为氯化剂，分别在自制无机催化剂和有机酸的催化作用下制取了二氯丙醇。
• 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 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。
• 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 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。
• Suspension bed hydrocracking technology and water soluble catalyst were used for upgrading of atmospheric residue from Dagang oil field.
  采用悬浮床加氢技术和水溶性分散催化剂对大港常压渣油进行了轻质化和改质研究。
• Synthesis of allantoin from glyoxylic acid and urea using ion exchange resins as catalyst was investigated.
  对三种阳离子交换树脂在乙醛酸与尿素缩合反应中的催化活性进行了研究。