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

• 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 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。
• The effects of catalyst and solvent on the reaction were studied.
  探讨了催化剂、反应溶剂等对反应的影响。
• 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。
• 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。
• With more active catalyst, the reaction was carried out completely.
  由于使用了活性较大的催化剂，反应进行地很彻底。
• 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。
• The progress on the research of immobilization of homogeneous catalyst is introduced.
  介绍了均相催化剂的固载化研究进展。
• 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。
• 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。