置換反應 的英文怎麼說

中文拼音 [zhìhuànfǎnyīng]
置換反應 英文
cementation reaction
  • 置 : 動詞1. （擱; 放） place; put; lay 2. （設立; 布置） set up; establish; arrange; fix up 3. （購置） buy; purchase
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 應 : 應動詞1 （回答） answer; respond to; echo 2 （滿足要求） comply with; grant 3 （順應; 適應） suit...
  • 置換 : displace; substitute; supersede; substitution; replacement; permutation; transposition; transposi...
  1. Deposition mechanism of electroless plating tin in acid chloride solutions was analyzed theoretically, and three steps were summed up, including period of replacement reaction, coexistence periods of copper - tin codeposition and self - catalyzed deposition, and period of self - catalyzed deposition

    從理論上系統地分析了酸性氯化物化學鍍錫的沉積機理，將其歸納為置換反應期、銅錫共沉積與自催化沉積共存期和自催化沉積期三個階段。
  2. Abstract : large time delay exists in complicated practical processes. for example, in fccu ( fluidized catalytic cracker unit ) reactor - regenerator, the feed is preheated through heat exchanging from fractional column slurry, thus results in large time delay. a predictive control system is designed for such processes, where the kernal algorithm is dynamic matrix control. application results show that the control behavior is improved than original pid control

    文摘:實際的復雜工業過程，往往具有大的時滯，例如：煉油廠催化裂化裝置的反應再生系統，其原料油預熱通過油漿換熱實現，因此時滯特別大.本文針對這一類大的時滯過程，設計了以動態矩陣控制為核心演算法的預測控制系統，運行實踐表明：這一控制方案比原pid控制在控制質量上有較大提高
  3. The free - phosphine carbene ruthenium complex [ 1, 3 - bis ( 2, 6 - dimethylphenyl ) - 2 - tetrahydroimidazol [ ( c5h5n ) 2 ( cl ) 2ru = chph ( 8 ) was prepared by the reaction of [ 1, 3 - bis ( 2, 6 - dimethylphenyl ) - 2 - tetrahydroimidazol ] ( pph3 ) ( cl ) 2ru = chph ( 7 ) with pyridine and used as a highly effective catalyst for the cross metathesis of acrylonitrile with allylbenzene

    摘要設計了由1 ， 3 -二（ 2 ， 6 -二甲基苯基） 2 -四氫咪唑基苯亞甲基三苯基膦二氯合釕（ 7 ）和吡啶反應生成無膦型金屬釕卡賓化合物1 ， 3 -二（ 2 ， 6 -二甲苯基） 2 -四氫咪唑基苯亞甲基2 -吡啶基二氯合釕（ 8 ） ， 8作為高效催化劑用於丙烯腈和烯丙基苯的交叉交互置換反應。
  4. The form of ion cluster was observed by transforming the [ - so3h ] to [ - so3ag ] and the theory of the forming of cluster was discussed in this thesis. it was concluded that both the ion cluster and multiplet coexist in the membranes

    通過ag +的置換反應，把卜so3hi置換為[一o3agl ，直接觀察到了離子簇的存在形式，探討了離子簇的形成機理，在此基礎上得出了膜中既有離子簇又有多重離子對存在的結論。
  5. Meanwhile, fundamental principles about electroless tin plating by reducing agent and disproportionation reaction were explained. function of every component in the bath was explained that complexing agent can effectively change the potential of copper and tin, and accelerate the beginning of replacement reaction favorably ; reducing agent can increase the rate of chemical reaction and has the effect of promoting reaction dynamics too ; antioxidant can effectively prevent sn2 + in the bath from being oxidated ; additive agent a can improve the stability of the bath ; additive agent b has such effects as refining and brightening for the tin deposits, and it enlarges the range of brightening section ; additive agent c used as leveling agent can not only make the depostis level off, but also improve the dispersive ability of the bath ; surface - active agent can solve bubble problem which gathered on the surface of the deposits, and improve the surface quality of the deposits and the bath stability

    闡述了鍍液中各組分的作用：絡合劑能有效地改變銅、錫的電位，促使初期的置換反應順利進行；還原劑能加快化學反應速度，對反應動力學有積極的促進作用；抗氧化劑能有效地防止鍍液中sn ~ （ 2 + ）的氧化；添加劑a能提高鍍液的穩定性，添加劑b對鍍層能有細化和光亮作用，擴大了鍍層光亮區的范圍；添加劑c作為平滑劑，不僅能增強鍍層表面的平整性，而且能提高鍍液的分散能力；表面活性劑較好地解決了化學鍍過程中汽泡在鍍件表面聚集的問題，提高了鍍層的表面質量和鍍液的穩定性。
  6. Study on competition reaction and replacement reaction of metallothioneins with lead ion

    金屬硫蛋白結合鉛離子的競爭反應和置換反應研究
  7. Metallothioneins ; lead ion ; competition reaction ; replacement reaction ; cd ; uv

    金屬硫蛋白鉛離子競爭反應置換反應圓二色性光譜法紫外光譜法
  8. By using circular dichroism spectroscopy method and ultraviolet absorption spectrophotometry, competition reaction and replacement reaction of metallothioneins with lead ion were investigated

    Mt - 。採用圓二色性cd光譜法和紫外uv吸收光譜法研究金屬硫蛋白結合鉛離子的競爭反應和置換反應。
  9. General comments on teaching and studying the conversion reactions

    芻議置換反應的教與學
  10. For the special physical and chemical character of aluminum, a nickel layer is deposited before electroplating. it can avoid the active surface of aluminum oxidized again or substitution reaction in the bath

    由於鋁特殊的物化性質，電鍍鎳鉻合金前採用預鍍鎳的工藝，避免活化后的鋁基體表面再次被氧化或在鍍液中發生置換反應。
  11. There has been an increasing interest in the production of particulate reinforced aluminum matrix composites by the replacement reaction between low - cost oxides and al

    採用廉價氧化物與al的置換反應來制備al _ 2o _ 3顆粒增強鋁基復合材料的方法是目前的研究熱點。
  12. The mechanism of solid - state displacement reaction has been studied, the solid - state displacement reaction path has been analyzed, the mechanical properties of composites has been tested

    Mo - si - c三元系穩定性化學勢相圖是定量分析mo _ 2c - si固態置換反應反應路徑的重要手段。
  13. Therefore, it is impossible that the microstructure of mosi2 - sic composites prepared by solid - state displacement reaction are interpenetrating structure. 6

    因此，在1200通過固態置換反應原位制備的mosi _ 2 - sic復合材料的微觀組織不可能是內聯型組織（ interpenetratingstructure ） 。
  14. A new type of structure of the solid - stale displacement reactions which named spiral - mtergrowth - aggregate structure was discovered in the mo2c - si diffusion couple and was considered as the result of spinodal - decomposition continuous phase - transformation

    昆明理工大學博士學位論文2002 . 5摘要6 .初步發現了一種新的固態置換反應形貌結構:螺旋共生束集型結構。
  15. 4. experimental data analysis and theoretical calculation indicated that the interface micro - structure of the solid - state displacement reaction between mo2c and si can be explained properly by the new theoretical model : rate - control - elements convergent diffusing model

    實驗數據分析和理論計算表明，本文提出的「速率控制元素非平行擴散模型」可以很好地解釋mo _ 2c - si固態置換反應的微觀界面結構。
  16. The stabilized chemical potential diagrams combined with the equilibrium phase diagrams of mo - si - c ternary system arid the principles of thermodynamic, kinetic, mass - balance could be applied to analyzing and judging reaction paths of in situ synthesis of mosi2 - sic composites through solid - state displacement reactions theoretically. 3

    該相圖結合平衡相圖和熱力學、物料平衡、動力學原則，可以作為分析和判斷固態置換反應原位合成mosi _ 2 - sic復合材料反應路徑的理論依據之一，並從理論上分析了固態置換反應原位合成mosi _ 2 - sic復合材料可能的反應路徑。
  17. But most of the researches focus on the reaction of single oxide and al to form wild phase al2o3. these researches show that only cuo / al reaction system can produce al2o3 particles steadily. however, the reaction is very drastic and it belongs to blast reaction

    但大部分的研究集中在單一氧化物與al的置換反應生成增強顆粒al _ 2o _ 3的方法上，研究表明，只有cuo al反應體系在al熔點以上不高的溫度范圍能穩定生成顆粒，但同時cuo al反應過于劇烈，屬于燃爆反應，不易控制。
  18. 7. the precise interface analysis shows that the growth of the parallel rod - aggregate sic is self - organiae appearance of non - equilibrium system. the precise analysis of interlace model of solid - state displacement reaction needs method of non - equilibrium thermodynamic

    7 .精緻界面模型分析指出，平行束集狀sic的生長屬于非平衡系統的自組織現象，固態置換反應界面模型的嚴密分析還需要引入非平衡態熱力學的概念方法。
  19. A new interface - perturbation model of solid - state displacement reactions ternary system is suggested and the interface - stability criterion is derived in the form of chemical potential if the chemical potential of rate - control - element at frontier of tiny perturbative zone goes up less than 20. 7 %, linear interface will grow up stablly and form layered structure ; if it goes up more than 20. 7 %, linear interface is not stable and will form aggregate structure

    通過建立界面擾動模型，推導了三元固態置換反應系界面穩定性的化學勢梯度判據。結果表明：如果擾動微區前沿速率控制元素的化學勢梯度升高小於20 . 7 ，平面界面穩定長大，將形成層狀結構；若大於20 . 7 ，平面界面不穩定長大，將形成束集型結構。
  20. The microstructures hardness grinding performances and mechanical properties of the composites have been analyzed. this paper also discusses the influences of quality ratio and mixture of different oxides to the composites " properties. at the same time, the thermodynamic principles and principles of dynamics have been studied

    本文研究了四種原位反應體系： cuo al 、 cuo + sio _ 2 al 、 cuo + tio _ 2 al 、 cuo + sio + _ 2 + tio _ 2 al ，並對由這四種原位反應體系所制備的鋁基復合材料的微觀組織、布氏硬度、耐磨性能以及拉伸力學性能作了分析與檢測，討論了不同氧化物配比以及不同氧化物的混合對復合材料性能的影響，研究了氧化物與al發生置換反應的熱力學與動力學機理。
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