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

• 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。
• 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。
• 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。
• 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。
• 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。
• Presents the performances and industrial application of TH-1 dehydrogenation catalyst.
  介绍TH-1型脱氢催化剂的性能及工业应用情况。
• 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。
• 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。
• 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。
• 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。