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

• Isoamyl butyrate was synthesized from butyric acid and isoamyl catalyzed by composite solid acid as the catalyst.
  用丁酸和异戊醇为原料，复合固体酸为催化剂合成了丁酸异戊酯。
• 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 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。
• 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。
• Research situation of synthesis methanol catalyst abroad& at home was introduced;
  介绍了国内外合成甲醇催化剂的研究情况；
• Phase transfer catalyst was used for synthesis of citral diethyl acetal, the yield has increased.
  用相转移催化合成了柠檬醛二乙缩醛，提高了产率。
• 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。
• 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。
• 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。
• 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。