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-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。
• 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。
• Mechanical test results must be evaluated In conjunction with catalyst activity, selectivity, and stability data.
  必须将机械测试结果和催化剂活性、选择性和稳定性数据联系起来进行综合评价。
• 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。
• 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。
• 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。
• 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 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。
• 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。