catalyst

音標(biāo)發(fā)音

• 英式音標(biāo) [?k?t.?l.?st]
• 美式音標(biāo) [?k?t?.?l.?st]
• 國(guó)際音標(biāo) ['k?t?list]
• 英式發(fā)音
• 美式發(fā)音

基本解釋

• n. [物化] 催化劑；刺激因素

詞根記憶

• cata(在…下麪) + lyst(分開(kāi))→在下麪起分解作用→催化劑，觸媒
• cata(下麪) + lyst(=lysis溶解)→促進(jìn)溶解→催化劑

同根派生

• adj性質(zhì)的同根詞

  catalytic：接觸反應(yīng)的；起催化作用的。

• adv性質(zhì)的同根詞

  catalytically：催化地。

• n性質(zhì)的同根詞

  catalytic：催化劑；刺激因素。

  catalysis：催化作用；刺激作用。

• catalyst相關(guān)詞

英漢例句

• I see my role as being a catalyst for change.
  我認(rèn)爲(wèi)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(xué)反應(yīng)的物質(zhì).
• It acts as a catalyst in the process of fermentation.
  它在發(fā)酵過(guò)程中起觸媒的作用.
• I see my role as being a catalyst for change.
  我認(rèn)爲(wèi)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(shuō)，他認(rèn)爲(wèi)銀行就應(yīng)該起到刺激外國(guó)直接投資的作用。

• catalyst更多例句

詞組短語(yǔ)

短語(yǔ)

• spent catalyst 廢催化劑；用過(guò)的催化劑
• zeolite catalyst 沸石催化劑
• platinum catalyst 鉑催化劑
• negative catalyst [物化]負(fù)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

• catalyst更多詞組

英英字典

劍橋英英字典

• something that makes a chemical reaction happen more quickly without itself being changed

柯林斯英英字典

• 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.

• catalyst劍橋字典
• catalyst柯林斯字典

專業(yè)釋義

化學(xué)

• 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(yīng)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

環(huán)境科學(xué)技術(shù)

• 催化劑

  Catalyst is the key techniques in CWO process.
  催化劑是CWO工藝的核心。

  機(jī)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(shí),金剛石單晶的(100)晶麪爲(wèi)粗糙的顆粒狀表麪,其中有納米級(jí)顆粒;而(111)晶麪呈現(xiàn)出有臺(tái)堦的平直表麪。

  交通運(yùn)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(guò)催化器的過(guò)程中，由於催化器的催化轉(zhuǎn)化作用，尾氣空燃比發(fā)生了變化。

  生物學(xué)

• 催化劑
• 觸媒

地球科學(xué)

• 催化劑

計(jì)算機(jī)科學(xué)技術(shù)

• 觸媒