catalyst
音标发音
- 英式音标 [ˈkæt.əl.ɪst]
- 美式音标 [ˈkæt̬.əl.ɪst]
- 国际音标 ['kætəlist]
- 英式发音
- 美式发音
基本解释
- n. [物化] 催化剂；刺激因素
词根记忆
- cata(在…下面) + lyst(分开)→在下面起分解作用→催化剂，触媒
- cata(下面) + lyst(=lysis溶解)→促进溶解→催化剂
同根派生
- adj性质的同根词
- catalytic：接触反应的；起催化作用的。
- adv性质的同根词
- catalytically：催化地。
- n性质的同根词
- catalytic：催化剂；刺激因素。
- catalysis：催化作用；刺激作用。
英汉例句
- I see my role as being a catalyst for change.
我认为我的角色是促成变革。 - A catalyst is a substance which speeds up a chemical reaction.
催化剂是一种能加速化学反应的物质. - It acts as a catalyst in the process of fermentation.
它在发酵过程中起触媒的作用. - I see my role as being a catalyst for change.
我认为我的角色是促成变革。 - 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。
词组短语
- spent catalyst 废催化剂；用过的催化剂
- zeolite catalyst 沸石催化剂
- platinum catalyst 铂催化剂
- negative catalyst [物化]负催化剂;缓化剂;缓和剂;翻译
- bifunctional catalyst 双功能催化剂;[物化]双官能催化剂;翻译
短语
英英字典
- something that makes a chemical reaction happen more quickly without itself being changed
- You can describe a person or thing that causes a change or event to happen as a catalyst.
- In chemistry, a catalyst is a substance that causes a chemical reaction to take place more quickly.
剑桥英英字典
柯林斯英英字典
专业释义
- 光催化
The activity of adsorption oxygen on the surface of catalyst affect the efficiency of trapping electron so as to affect the performance in oxidation.
在光催化氧化反应中，表面吸附氧活泼性影响光生电子的捕获效率，因而影响光催化氧化性能。 - 催化剂
- 催化剂
Catalyst is the key techniques in CWO process.
催化剂是CWO工艺的核心。机械工程
- 触媒
When diamonds were synthesized by nickel-base and iron-base catalyst, the fine particles and terrace structures with homogeneous step height were found by AFM on the diamond (100) and (111) surfaces, respectively.
AFM分析表明,镍基和铁基触媒合成金刚石时,金刚石单晶的(100)晶面为粗糙的颗粒状表面,其中有纳米级颗粒;而(111)晶面呈现出有台阶的平直表面。交通运输工程
- 催化器
When the assemble exhaust coming from the engine pass the catalyst, the air fuel ratio (AFR) changes because of catalysis.
汽车尾气在通过催化器的过程中，由于催化器的催化转化作用，尾气空燃比发生了变化。生物学
- 催化剂
- 触媒
- 催化剂
- 触媒