pore diffusion 中文意思是什麼
pore diffusion
解釋
孔隙擴散-
Another question discussed was the pore shape correction. the equivalent pore radius of the elongated microcrack membrane pore was corrected by the correlation present in the study on the stomata diffusion of monocotyledons
這合理地解釋了在膜接觸器氣液分離過程中，氣液接觸面積等於整個中空纖維膜的表面積而不是孔面積這一實驗現象。 -
The third model was designed to investigate atom diffusion at contacting point. fe was sintered at 500, 550 > 600, 650 > 700 under bpec and radiation heating. the test results of image processing indicated that the average pore size took on wavelike with temperature under bpec heating
脈沖大電流加熱條件下，其它條件相同時，分別在800 、 900的溫度武漢理土大學碩士學位論文下擴散連接cu絲和ni絲，結果表明接觸線處cu和ni的擴散系數隨溫度的升高而增大。 -
The results showed that the combination of both capillary absorption and moisture diffusion fitted the experimental data very well, pore structures of cement - based materials had great effect on the kinetics of water transport in the materials
結果表明：只有結合毛細吸收和擴散2種傳輸過程才能很好地表徵水泥基材料內部的水分傳輸過程，材料內部孔隙結構時水分傳輸的動力學過程有很大的影響。 -
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 。 -
On the basis of analysing the mechanism of improvement of the adsorption mass transfer by ultrasound field, a batch model cosindering pore difusion and surface diffusion, and a fixed - bed homogeneous model of mass transfer is developed.
論文在分析超聲場強化固-液吸附傳質的機理上，提出了考慮孔內擴散與表面擴散的靜態傳質模型以及考慮軸向擴散的均相動態傳質模型。 -
The calculation results show that the radius of the gas channels in the reaction layer and the porosity and average pore radius of the gas - diffusion layer seem to be less important for the performance of the electrode
模型結果表明對于電極性能而言，氣體擴散層的孔隙率與平均孔徑以及反應層氣體通道的半徑，相對其他參數來說顯得不太重要。 -
Generally, the membrane thickness is much larger than the pore dimension. therefore, the resistance of the pore channel was the control resistance of the membrane diffusion process. while the existences of the stephen diffusion and pore interaction well explained the reason why the total membrane surface would be used as the interfacial area through where the mass transport took place
盡管由於膜的厚度比孔的尺寸要大很多， stephen擴散以及孔之間的相互作用對通過膜的總擴散阻力影響很小，但它們存在的結果是使整個膜表面的氣體濃度趨於一致。 -
For membrane contactor process, the binary gas mixture diffusion through the pore channel should be considered as a transition diffusion of the absorbed momentum a through the stagnant momentum b. and the process would consist three steps : transition diffusion through the pore channel, stephen diffusion in the pore edge, and the pore interaction in the membrane surface
對于孔形狀為近似橢圓形的聚丙烯微孔膜，在研究擴散問題時，其等效孔徑可採用葉孔擴散問題中的孔形狀校正公式來計算。在膜接觸器中，氣體通過微孔膜的擴散機理為過渡擴散，其擴散過程包括通過孔道主體的過渡擴散、微孔膜出口處孔道邊緣的stephen擴散以及孔之間的相互作用。 -
The concrete used in testing bridge is monitored and some performance at definite age including compressive strength, splitting fensile strength, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure by mercury porosimetry are tested. these performances are compared with that of concrete which designed by traditional method. the results show that mechanical properties of concrete designed by high durability concrete proportion and traditional method meet require ment at any age, however, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure of the former are better than the latter, so high durability concrete is economic benefit
對試驗橋用混凝土的質量進行監控，並成型試件測量所需齡期內的抗壓強度、劈裂強度與抗凍融、抗鹽凍、氯離子擴散系數（ dcl - ） 、抗碳化等耐久性能指標及孔結構，並與傳統混凝土進行對比研究，結果表明:高耐久性混凝土及按傳統配合比設計的混凝土的力學性能均能滿足相應齡期的要求，但前者的抗凍融性能、抗鹽凍性能、抗碳化性能、 dcl -和孔結構明顯優於後者，並具有明顯的社會經濟效益。 -
Air electrode, in which nh _ 4hco _ 3 is as pore former, is mainly studied in this paper. the manufacturing process of air electrode, the composition of waterproof and gas diffusion layer, the composition of catalysis layer, and two kinds of catalyst were studied by numbers
本文針對以碳酸氫銨為造孔劑的空氣電極進行研究，分別對電極製作工藝、防水透氣層組成、催化層組成以及兩類催化劑進行了初步系統的探索和研究。 -
The function of diffusion layer and hydrophobic layer is affected by channel and depends on the pore diameter, the porosity and the thickness of diffusion layer and catalyst layer
擴散層和疏水層對氣體作用的結果受流道影響，取決于孔徑、空隙率和厚度的變化。 -
In this paper, theoretical models for kinetic study of chromatography in recent years is summarized and several kinds of models used commonly are described such as general rate model, lumped pore diffusion model, equilibrium - dispersive model and transport - dispersive model, and their characteristics and application range are discussed
本文對近年來色譜分離動力學研究常用理論模型的發展進行了綜述，重點介紹了普遍化速率模型、集總孔擴散模型、平衡擴散模型和傳遞擴散模型4種常用的色譜模型，並討論了各模型的優缺點及應用范圍。 -
Mix mineral additive into concrete has great effect on the pore structure, especially the addition of sodium sulfate coarsening the pore structure enormously, and increase the total porosity. after mixing sodium sulfate, the chloride ion diffusion coefficient of air entraining concrete increased, impermeability reduced ; but mixing sodium nitrite and sodium chloride can
Na _ 2so _ 4摻入后，引氣混凝土的氯離子擴散系數增大，抗滲性降低;而nano _ 2和nacl能夠細化水泥石的孔結構，對混凝土的抗滲性有利，但提高幅度不大。 -
Since the novel m41s mesoporous materials ( particularly mcm - 41 ) was firstly reported by mobil ' s researchers, much attention has been paid to this kind of materials. they have not only larger surface area, uniform pore structure and huge pore volume, which can reduce bottleneck phenomenon in molecular diffusion, but also higher mechanically and chemically stability as new inorganic materials. these materials have been widely used as catalysts, sorbents and separation materials as they were synthesized firstly
介孔材料作為一種新型功能材料，由於其具有較大的比表面積、長程有序的孔道結構、較大的孔容、良好的擴散性能和能夠減小分子擴散中的瓶頸效應等特點，以及作為無機材料所具有的機械和熱穩定性，所以自1992年mobil公司開發研製了以mcm - 41為代表的m41s系列介孔材料以來，被廣泛應用於催化、吸附和分離等領域。
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