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。
• 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。
• 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。
• 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
• 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。
• 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 solvent capacity of ionic liquid for alkane is important to he separation of the alkylate and the catalyst.
  而饱和烷烃在离子液体中的溶解能力对烷基化产物和催化剂的分离十分重要。
• 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。
• 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。