孔隙擴散 的英文怎麼說

中文拼音 [kǒngxìkuòsǎn]
孔隙擴散 英文
pore diffusion
  • 隙 : 名詞1 （縫隙; 裂縫） crack; chink; crevice 2 （空閑） gap; interval 3 （漏洞; 機會） loophole; op...
  • 擴 : 動詞（擴大） expand; enlarge; extend
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 孔隙 : small opening; hole; [冶金學] pore; aperture gap; pore space; ventage; void
  1. 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。
  2. 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。
  3. 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。
  4. The effect of thermal conductivity of membrane on the distribution of temperature in the fuel cell is discussed, and the effect of inlet velocity and porosity of porous diffusion layers on the fuel cell performance are analyzed

    討論了質子膜的導熱率對電池內溫度分佈的影響。分析了進料速度和多孔擴散層孔隙率對電池性能的影響，結果表明較快的進料速度和較大的擴散層孔隙率都能有效提高電池的性能。
  5. The particles aggregation was simulated using particle - cluster and cluster - cluster aggregation model. several type of floes was reached and its morphological characteristics was analyzed the fractal dimension, density and porosity of floes was studied by changing sticking probabilities, sticking position, particle number, particle concentration, difrusion coefficient and motion trajectory. the parameters by which special floes growth were determined. in the study of morphology, floes of yellow river ' s loess particles was observed by tv - microscope. its morphological characteristics were obtained by image analysis. the effect of fractal dimensions by stirring time strring speed, macromolecule flocculant dosage, flocculant concentration and particle concentration was studie. its rule of change was obtained. on the basis of other studies, the flocculation kinetics and floes structure was studied

    本文應用計算機模擬技術，在二維空間內採用單體凝聚和集團? ?集團凝聚兩種模型對顆粒凝聚過程進行了模擬，得到了多種形態的絮體，並對絮體進行了形態分析，通過改變粘附概率、粘附位置、顆粒數量、顆粒濃度、擴散系數和運動路徑等模擬參數，我們考察了絮體分形維數、密度和孔隙率隨模擬條件變化的影響規律，得到了形成特定形態絮體的控制參數。
  6. In the hillslope, d ( ), c ( ) and k ( ) of soil water have high spatial correlation. d ( ), c ( ) and k ( ) are significant affected by soil water content, capillary pore and sand content bulk density and non - capillary pore aperture are significantly affected on permeability rate. correlation analysis indicates that it is significant correlate

    在坡面上，含水量、毛管孔除和砂粒含量對土壤水的擴散率、比水容量和導水率的影響較大;容重和非毛管孔隙對滲透率的影響較大，相關性檢驗達顯著和極顯著水平。
  7. In the aspect of mortar permeability the author has done some experiments, including the water absorption, porosity, weatherability, anti - freeze - thaw cycle, carbonation and the chloride diffusion experiment, and compared those properties with conventional mortar to testify the modified effects. on the base of these experiments, the method of sem was used to analyze the microstructure and hydration mechanism of polymer modified cement mortar, and the author draws a conclusion that the 9 percent of polymer - cement ratio is the optimum ratio

    在改進砂漿的密實度和抗滲性能方面，主要進行了不同聚合物摻量下的吸水性試驗、可透孔隙率試驗、耐老化性試驗、抗凍性試驗、抗碳化試驗，以及對耐久性能影響最大的快速氯離子擴散試驗，並和普通砂漿的相應試驗進行了對比分析，驗證了聚合物砂漿的改性效果。
  8. 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。
  9. In the study, what ' s more, some particular experiment phenomenon are explained by means of theories, such as water move, the change of water and ice. in the test, the preliminary propagation of the hard rock containing a small mount of aperture is dominant during the test, inner damage of soft rock containing a large mount of apertures is largely propagating with the time increasement of circle, because the circle time is limited, the damage propagation can not be observed during enough times

    試驗發現，對于強度較大，顆粒孔隙閉合程度較高時最初的幾次凍融循環對損傷的擴展起著主導作用，而後逐漸趨于恆值;而對于強度較低，孔隙貫通程度較高，離散性較大的軟砂巖，隨著凍融循環次數的增加，損傷變量增大，由於本次試驗凍融次數有限，未能觀察到凍融循環次數較高時的損傷變量變化情況。
  10. In this paper a numerical method for equations of transport and biodegradation in the fractured media is discussed. because the equations consist of terms related to advection, diffusion, biochemical as well as the term of exchange betwen the fracture and the porous media, it is very difficult to find their solution. in order to find more efficient method for solving these equations, several numerical methods for the equations without biochemical terms are discussed first. the numerical results show that the cubic spline method can be used to solve advection flow dominated problem which often occurred in the fractured media. then, the equation with both advection - diffusion term and biochemical term are discussed. the splitting - operator is used to decouple the advection and diffusion terms with biochemical term in the equations. the way to determine the smaller time step for solving fast biochemical terms is introduced through comparing the order of characteristic time of biochemical term with that advection ( diffusion ) term. numerical simulation results show that good agreement between analytical solution and experiment result is attained

    本文討論了含裂隙介質地下水污染物輸運與生物降解非線性方程組數值求解方法.方程含有對流項、擴散項、生長、死亡、吸附、解吸、趨化和孔隙與裂隙介質界面間的交換項的非線性偶合，使演算法十分困難.本文討論了無生化過程時的幾種求解方法，數值結果表明：用三次迎風插值法對常見的對流項占優勢，且場變量有較大梯度的問題較適用.在討論有生化反應過程時，利用對流項與生化反應項的特徵時間量級估算，給出了求生化過程作用子步的時間步長估算辦法.用上述方法所得到的模擬結果與解析解、無化學反應和有化學反應的實測值對比，吻合很好
  11. Abstract : the paper presents a theoretical study on the thermal conductivity of frost formation on cooled flat plate under forced convection. taking the porous meditum as a physical model of frost layer, according to the theories of heat and mass transfer, the formula on heat conductivty of frost formation is derived

    文摘:研究水蒸汽凝華結霜過程在冷壁上形成的霜層的導熱系數，依據隨機管子多孔介質霜層模型，假設霜層是由孔隙空間與冰晶骨架構成的多孔介質，其中孔隙空間由隨機毛細管及連接管子的接頭形成，濕空氣中的水蒸汽在霜層的孔隙空間中擴散輸運並凝華結霜，根據傳熱傳質學理論，導出霜層導熱系數關系式。
  12. Moreover, the falling rate of its microhardness is minished. molybdenum wire doped with la2o3 is better at enhancing mechanic properties and microstructure than molybdenum wire doped with y2o3. furthermore, la2o3 particles are easier to diffuse to the grains boundary than y2o3 particles under high temperature

    此外，本實驗還發現，摻雜la2o3比摻雜y2o3更有利於提高鉬絲高溫下的力學性能，改善鉬的燒結態形貌，降低其孔隙率，減小其晶粒尺寸，且la2o3顆粒比y2o3的顆粒更容易在高溫下擴散到晶界上去。
  13. Many factors which affect the epitaxy qualities, especially the porosity of porous silicon and growth temperature, have been studied in detail. it is found that the pre - oxidation of porous silicon can efficiently prevent the boron diffusion during epitaxy. the defaults along { 111 } are the main defects in epitaxial silicon layer

    深入研究了影響外延的各種因素，特別是多孔硅的孔隙率和外延溫度對外延層質量的影響，發現多孔硅的預氧化可以有效地阻止外延時b的擴散，外延層中主要的缺陷是沿著{ 111 }面生長的層錯。
  14. In most cases the patch is saturated with the drug, which steadily diffuses through microscopic gaps between skin cells and through the skin ' s pores

    大多數的貼片都含有飽和的藥物，可以穿過皮膚細胞之間的細微間隙以及毛細孔，持續向體內擴散。
  15. In the microcosmic field : ( 1 ) from the disciplinary of hole in loess diversification, that the disciplinary of effective hole in loess diversification is the microcosmic incarnating of the disciplinary of collapsible speed diversification was pointed ; ( 2 ) the function between distributing density of effective hole and time was established by dla

    在微觀角度上： （ 1 ）從孔隙率變化規律出發，指出有效孔隙的變化規律是濕陷速率變化規律的微觀表現； （ 2 ）利用有限制的擴散凝聚（ dla ）模型，得出了有效孔隙分佈密度與時間的函數關系式。
  16. The analyses of the microstructures as well as the characterizations of microcracks, deposition defects and residual pores of 3d c / sic composites have been done to determine the main diffusion channels of oxygen into the composites at different temperature domains. 2

    對3dc sic復合材料的顯微結構進行了表徵，對材料中的各種微裂紋、缺陷和孔隙進行了分析，研究了不同溫度區間內氧化性氣體在復合材料中的主要氣相擴散通道。
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