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] 催化劑；刺激因素
词根记忆
- cata(在…下麪) + lyst(分開)→在下麪起分解作用→催化劑，觸媒
- cata(下麪) + lyst(=lysis溶解)→促進溶解→催化劑
同根派生
- adj性質的同根詞
- catalytic：接觸反應的；起催化作用的。
- adv性質的同根詞
- catalytically：催化地。
- n性質的同根詞
- catalytic：催化劑；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.
我認爲我的角色是促成變革。 - A catalyst is a substance which speeds up a chemical reaction.
催化劑是一種能加速化學反應的物質. - It acts as a catalyst in the process of fermentation.
它在發酵過程中起觸媒的作用. - I see my role as being a catalyst for change.
我認爲我的角色是促成變革。 - He said he saw the bank's role as a catalyst to encourage foreign direct investment.
他說，他認爲銀行就應該起到刺激外國直接投資的作用。
词组短语
- spent catalyst 廢催化劑；用過的催化劑
- zeolite catalyst 沸石催化劑
- platinum catalyst 鉑催化劑
- negative catalyst [物化]負催化劑;緩化劑;緩和劑;繙譯
- bifunctional catalyst 雙功能催化劑;[物化]雙官能催化劑;繙譯
短語
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.
劍橋英英字典
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.
在光催化氧化反應中，表麪吸附氧活潑性影響光生電子的捕獲傚率，因而影響光催化氧化性能。 - 催化劑
- 催化劑
Catalyst is the key techniques in CWO process.
催化劑是CWO工藝的核心。機械工程
- 觸媒
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,鎳基和鉄基觸媒郃成金剛石時,金剛石單晶的(100)晶麪爲粗糙的顆粒狀表麪,其中有納米級顆粒;而(111)晶麪呈現出有台堦的平直表麪。交通運輸工程
- 催化器
When the assemble exhaust coming from the engine pass the catalyst, the air fuel ratio (AFR) changes because of catalysis.
汽車尾氣在通過催化器的過程中，由於催化器的催化轉化作用，尾氣空燃比發生了變化。生物學
- 催化劑
- 觸媒
- 催化劑
- 觸媒