carbon diffusion 中文意思是什麼
carbon diffusion
解釋
碳擴散-
Effect of the carbon black on the electrical performance of gas diffusion electrode of zinc - air battery
炭黑對鋅空氣電池空氣擴散電極電性能的影響 -
In this dissertation, refining grains, depositing conductibility carbon film on the surface of the particles and doping mg ~ ( 2 + ) into the lattice of lifepo4 were adopted to improve the electro - chemical performance of the cathode material. the cathode material lifepo4 mainly has two flaws, the low conductibility and the slow li + ion diffusion, which have a bad influence on the performance of the cathode material
論文主要針對制約正極材料lifepo _ 4性能的兩大致命的缺點，即低的電子導電率和低的鋰離子擴散速率，採取材料顆粒的細化、顆粒表面沉積碳導電層以及mg ~ （ ~ （ 2 + ） ）離子摻雜等措施對其進行改性探索，以提高正極材料lifepo _ 4的電化學性能。 -
The authors analyzes the function change of urban in its evolvement and the eco - environmental problems caused by this change. based on this analysis and the method of systems ecology founded by odum h t, the authors discuss the aim and the principle of urban eco - environment planning under the sustainable development ; put forward the general view of urban eco - environment planning in which the kernel is the adjusting of industry structure, land - use structure and spatial pattern ; construct the dynamic simulating model of eco - environment planning of guangzhou city, china which organizes the models of economy, population, the equilibrium of carbon and oxygen, and other models of atmospheric diffusion, rainwater sedimentation, vegetation absorbing to so
在剖析城市演化歷程中的功能變遷與導引的生態環境滯脹類型和危害的基礎上，著重利用系統生態學的原理和方法，探討了可持續發展要求下的城市生態環境規劃的目標原理和研究的內容方法及過程提出了以產業結構土地利用結構和空間格局的調整為核心制定城市生態環境規劃的總體思路創造性地融大氣擴散雨水沉降和植被吸納so -
The optimum conditions for air electrode preparation were shown as follow : 20 % ptfe and 20 % mno2 in active layer, thickness of active layer 0. 15 - 0. 25mm and the ratio of active carbon to ethine black 4 : 1 ; 60 % ptfe in the gas diffusion and waterproof layer, employing na2so4 as pore - making agents, thickness 0. 35 - 0. 45mm, colding forming and layer sequence catlytic layer / gas diffusion and waterproof layer / current collector layout ; employing 40 meshed nickel screen as current collector and thermal treatment temperature over 200
確定了制備空氣電極的優化工藝條件，催化層中ptfe含量約20 ， mno _ 2的最佳含量約為20 ，催化層中活性炭和乙炔黑的比例為4 ： 1 （質量比） ，厚度在0 . 15 - 0 . 25mm之間。防水透氣層中ptfe的含量約為60 ，以無水硫酸鈉作為造孔劑，厚度一般為0 . 35 - 0 . 45mm 。電極各層採用催化層/防水透氣層/集流體的排布方式，冷壓成型，熱處理對空氣電極的性能影響較大，熱處理溫度不低於200 。 -
According to the i - t curves of potential step, it was revealed that electrocrystallization of ni - w - b alloy on glassy carbon followed the mechanism of instantaneous nucleation and three dimensional growth with diffusion controlled. the crystal nucleus number on the surface of electrode raised by the increase of over potential
根據電位階躍的i t曲線分析得知，在玻摘要碳電極上ni wb合金電結晶過程遵從擴散控制瞬時成核三維成長模式進行，且隨著過電位的增加，電極表面上晶核數增多。 -
The process by which the surface carbon concentration of a ferrous alloy is increased by diffusion from the surrounding environment
從周圍環境中向鐵基合金表面擴散碳，從而使其表面碳濃度提高的工藝過程。 -
The research results show that the radius of the gas channels and the electronic conductivity in carbon phase of the reaction layer, and the porosity of the gas diffusion layer are relatively less important
研究結果表明氣體擴散層孔隙率，反應層氣體通道的半徑以及碳相中電子傳導率等參數的變化對電極性能影響不大。 -
Diffusion coefficient of lithium in artificial graphite, mesocarbon microbeads, and disordered carbon
中間相炭微球及無定形碳中的擴散系數 -
Diffusion characteristics and loss amount of carbon dioxide gas in fs9 well
2氣擴散特徵及損失量 -
Abstract : a new simulating method is established for the calcul ation of the hardness profile of high - carbon - concentration deep - carburization, on the basis of analyzing this process and taking into account the influence o f carbide solution and dissolution, carbon - concentration and temperature on the diffusion behavior, and the influence of the environment factor on carbon trans fer through the gas - solid interface
文摘:在對高濃度深層滲碳的特點進行分析的基礎上，考慮到碳化物的析出與溶解、溫度及碳濃度對擴散行為的影響，氣氛環境對相界面碳傳遞過程的影響，淬火烈度對滲碳層冷卻效果的影響，提出了一種新的模擬高濃度深層滲碳滲層硬度分佈的方法。 -
Chapter five introduces the detail technics process of synthesis of carbon nanotubes by using liquid - hydrocarbon diffusion flame. chapter six discusses and analyzes the effects of every technics paramenters on the nanotubes produced by using liquid - hydrocarbon diffusion flame. chapter seven analyzes the sem and tem micro - appearances of the nanotubes produced by liquid - hydrocarbon diffusion flame and draws the conclusion of the nanotubes " cluster growth mechanism. chapter eight analyzes the sem and tem micro - appearances of the nanofibes produced by liquid - hydrocarbon diffusion flame, and considers that the growth mechanism of nanotubes and nanofibers is different
第六章討論和分析了液態碳氫化合物燃料擴散火焰法制備碳納米管時具體各項工藝參數的影響。第七章分析了擴散火焰法制備碳納米管的sem形貌和tem形貌，歸納出碳納米管團簇生長的規律。第八章對六種基板材料在擴散火焰中制備出的碳納米纖維的sem形貌和tem形貌作了分析討論，認為擴散火焰法制備碳納米管和碳納米纖維的形成機理不同。 -
But the comprehensive properties were improved remarkably. with the addition of carbon nanotubes, the polarization of charging process decreased, the plateau of discharge became flatter and the migration of potential of peaks value of cyclic voltemmograms reduced. for the other hand, the exchange current increased, ohm resistance and electrochemical reaction resistance of the electrodes decreased, the diffusion resistance of hydrogen and the resistance of adsorption decreased, too
摻入碳納米管對儲氫合金電極的容量影響較小，但其電化學性能卻有較大的改善，主要體現在：充電的極化減小，放電平臺更加平穩、循環伏安曲線的峰值電位隨掃描速度增大的遷移量減小，交換電流密度增大，電極的歐姆電阻、電化學反應、擴散電阻和吸附電阻均減小。 -
Influence of some parameters are analyzed, such as : d ( diffusion rates ), v ( coefficient of convection ). double or three compartments model of soc is used. it is found that the diffusion process for different compartments of organic carbon in soil is very differently. this model could also calculated the accumulation of soc in soil per year, which is helpful to understand the dynamic process of organic carbon storage in soil
最後一章本論文對新老有機碳在土壤當中的遷移積累進行了數值模擬，分析了不同參數對有機碳擴散的影響，得到了不同年齡的有機碳在土壤中的分佈規律，這為進一步預估中國土壤中的有機碳動態變化打下了基礎。 -
Factor contributing to this problem is that the metal cobalt used as the cementing phase easily causes diffusion and dissolution of carbon, promotes graphite growth and inhibits diamond nucleation and growth in the course of competitive growth between diamond and graphitic carbon
其原因是在沉積過程中，基體中所含的鈷會引起碳的溶解和擴散，從而導致金剛石成核密度的降低和石墨的形成。 -
For the first time, take tarim basin as an example to establish theoretical, industrial threshold value of organic enrichment of carbonate source rocks. calculate gas quantity of generation, adsorption, dissolving in oil, dissolving in water, diffusion of unit area carbonate rocks at different geologic conditions. and then according to the material balance principle, figure out the corresponding organic carbon content when gas being started expelling from source rocks with separate phase
分別計算了不同地質條件下單位面積碳酸鹽巖的生氣量及源巖和圍巖各種形式的殘留和耗散氣量（吸附氣量、油溶氣量、水溶氣量、擴散氣量） ，進而根據物質平衡原理計算出源巖開始以游離相有效排氣時所對應的有機碳含量，並將它作為該地質條件下氣源巖的有機質豐度理論下限值。 -
Calculate gas quantity of generation, adsorption, dissolving in oil, dissolving in water, diffusion of unit area carbonate rocks at different geologic conditions. and then according to the material balance principle, figure out the corresponding organic carbon content when gas being started expelling from source rocks with separate phase. regard it as the theoretical threshold value ( tocmin ) of gas source rocks at that same geologic condition
分別計算了不同地質條件下單位面積碳酸鹽巖的生氣量及源巖和圍巖各種形式的殘留和耗散氣量（吸附氣量、油溶氣量、水溶氣量、擴散氣量） ，進而根據物質平衡原理計算出氣源巖開始以游離相有效排氣時所對應的有機碳含量，並將它作為該地質條件下氣源巖的有機質豐度理論下限值。 -
Effect of rare - earth elements on the diffusion coefficient of aluminum during hot - dip aluminizing for low carbon steel
稀土對低碳鋼熱浸滲鋁擴散系數的影響 -
Bubble enlargement during ascent is caused by a continuous diffusion of dissolved carbon dioxide through the bubble ' s gas / liquid interface
在氣泡上升的過程中，溶解的二氧化碳會不斷自氣泡表面擴散到氣泡里頭去，因此氣泡會不斷變大。 -
Abstract : the average diffusion coefficient of carbon in surface layer of steel 20 rare ea rth carburized at 880 and 900 for 8 h was calculated by substituting the mea sured layer depths into the diffusion equation
文摘:通過對20鋼常規氣體滲碳和稀土滲碳層深的測定，計算出稀土滲碳時碳在奧氏體中的平均擴散系數。
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