external diffusion
英 [ɪkˈstɜːnl dɪˈfjuːʒən]
美 [ɪkˈstɜːrnl dɪˈfjuʒən]
外扩散
双语例句
- Research on the Effect of Different External Environments on Smoke Diffusion in Tunnel Fire
外部环境对城市地下隧道火灾烟气扩散影响的研究 - The obtained results showed that the effect of external diffusion could be slackened by the decrease of fixed-bed voidage and the increase of space velocity.
计算结果表明，银催化剂床层空隙率的减小或操作空速的增加有利于减弱该催化反应过程中外扩散效应的影响。 - A Preliminary Study on the Influence of Internal and External Diffusion over Residue Hydrotreating Catalyst
扩散对渣油加氢反应影响的初步研究 - These kinetics parameters of the immobilized cell system can be significantly influenced by internal and external diffusion.
固定化细胞系统的动力学常数还受到内扩散和外扩散的影响。 - A kinetics of pyrolysis gasoline hydrogenation over Pd/ Al2O3 catalyst was investigated using a stirred semibatch reactor in a regime free of external diffusion limitations.
采用高压搅拌釜式反应器，在消除催化剂外扩散影响的基础上，对裂解汽油选择性加氢反应动力学进行了研究。 - Therefore, the long-term oxidation speed of aluminized steel is controlled both by the internal and external oxidation of diffusion layer and the formation of voids ( voids zone) seriously influences cyclic spalling resistance.
因此，渗铝钢的长期氧化速度同时受扩散层内氧化和外氧化的控制。空洞（空洞带）的形成对循环剥落性能也产生严重影响。 - Results show that the factor of the adsorption system is the external diffusion of the gas membrane and that the adsorption wave follows the constant-pattern rule. It also shows that low temperature, low concentration, and high flow rate favour the adsorption process.
结果表明，该吸附体系是以气相界膜外扩散控制为主的，其吸附波遵循恒定模式规则，低温、低浓度、高流速等对吸附有利。 - The coke reaction with CO_2 is mainly controlled by the internal diffusion at lower temperatures, while with the increasing of reaction temperature, it is controlled by a combination of external diffusion, chemical reaction and internal diffusion.
焦炭溶损反应在低温区主要受内扩散控制，随着温度升高，反应由外扩散、化学反应和内扩散三步控制； - A method of calculation of the dead zone without reaction and corresponding effectiveness factor for Immobilized enzyme considering the effect of internal and external diffusion on enzyme reactions has been presented.
考虑内外扩散阻力影响的条件下，提出了计算固定化酶未反应死区及相应有效因子的方法。 - This paper explains the antienergistic interaction between external diffusion and chemical inhibition in the reaction mathematically.
从数学上解释了外扩散抑制和一般性化学抑制间所存在的抗激发互交作用。 - Theoretical analysis of zero-order isothermal reactions within one-dimension geometry symmetry catalyst particles ── 1.neglecting external diffusion
一维几何对称催化剂颗粒内零级等温反应的理论分析&1.忽略外扩散影响 - The aim, scope and importance of biochemical reaction engineering are expounded, and the intrinsic kinetics of microbial growth, product formation arts substrate consumption as well as the macro-kinetics of external and internal diffusion effects of biocatalyst particle or film are systematically introduced.
本文阐明了生化反应工程的目的、范围和重要性。并对微生物生长、产物形成和基质消耗的本征动力学以及对生物催化剂颗粒或膜的内外扩散影响的宏观动力学作了较系统的介绍。 - Some inert gases, which are added to the three phase circulating fluidized bed reactor, not only reduce the external diffusion resistance and increase the reaction rate, but also make the decomposition of CHP well-balanced.
在新型三相循环流化床反应器中加入辅助的扰动气体是必要的，其作用既减少外扩散阻力、增加反应速率，又使反应平稳进行。 - For the esterification of n-butyl acetate catalyzed by the resin, the apparent activation energy ( Ea), catalytic coefficient ( ka) and effect of internal and external diffusion were investigated.
考察了树脂催化剂液相合成乙酸丁酯反应的表观活化能、催化系数和内外扩散影响。 - Besides, the rate of adsorption was under the control of intra-particle diffusion and external diffusion simultaneously.
此外吸附速率受颗粒内扩散和其它类型扩散的共同控制。 - It was found that the catalytic hydrogenation of rosin is a reaction under the control of external diffusion. The effect of external diffusion could be eliminated when the stirring speed was up to 600 r/ min.
考察了搅拌器类型、搅拌转速对高压釜持气量及枞酸转化率的影响，认识到松香催化加氢是外扩散控制的反应，当搅拌转速达600r/min时，基本上能消除外扩散的影响。 - Raney ′ s nickel demonstrates the similar activity to that of noble metal Pd/ C catalyst, and the long life span that its catalytic activity keeps intact basically after being reused for 10 times under the circumstance of eliminating external diffusion influence.
在消除外扩散影响的情况下，骨架镍显示出与贵金属钯/炭催化剂相似的活性，而且寿命长，重复使用10次催化活性基本保持不变。 - Drying of plant powder and granulated material with high moisture content demands that the drying equipment can meet certain external diffusion intensity condition and certain internal diffusion condition.
植物型高水分粉粒状物料的干燥，对干燥设备既有外扩散强化的要求、也有内扩散传递条件的要求。 - Simulating and calculating the forst-order Isothermal Parallel Reactions With in a Porous Catalyst particle by Computer& Neglecting the External Diffusion
计算机辅助模拟计算催化剂颗粒内的一级等温平行反应&忽略外扩散的影响 - Photocatalytic degradation kinetics of 4BS dye stuff was studied in an open batch slurry reactor with fine particulate TiO 2 catalyst and UV light. The influences of mixing of solid-liquid and external diffusion on degradation rate were eliminated by increasing stirred rate.
在间歇式淤浆床反应器中，以TiO2为催化剂、高压汞灯为光源进行了4BS染料光催化降解的动力学研究。 - By using the Silicon-Aluminum solid acid catalyst, the reaction kinetics behaviors of isobutene oligomerization were studied in a high-pressure micro reactor under the condition for eliminating inner and external diffusion resistance.
用硅铝小球固体酸作催化剂，在排除了内、外扩散影响的基础上，利用高压微分反应器对异丁烯齐聚反应的动力学行为进行了实验研究。 - Liquid-phase benzene hydrogenation to cyclohexane was studied over Pd/ γ-Al_2O_3 catalyst in a regime free of internal and external diffusion limitations.
采用Pd/γ-Al2O3催化剂，在排除扩散影响的条件下，研究了液相苯催化加氢制环己烷的反应动力学。 - The reaction carried out in a fixed-bed reactor under the conditions with internal and external diffusion resistance eliminated.
反应过程在自制的固定床反应器中进行，且消除了内外扩散的影响。 - Effect of Nonuniform Activity Distribution on Effectiveness Factor of Catalysts in Simultaneous Internal and External Diffusion
内、外扩散同时存在时活性非均匀分布对催化剂有效因子的影响 - First, residence time range excluding external diffusion limitation and the average size range excluding internal diffusion were determined limitations by changing the loading amount and size of the catalyst, respectively.
首先，通过改变催化剂填装量的方法，确定了消除外扩散影响的反应物停留时间范围，然后通过改变催化剂粒径的方法，确定了消除内扩散影响的催化剂粒径范围。 - The adsorption rate controlling step is determined by inner and external diffusion models.
改性活性炭对ClO4-的吸附速率控制步骤由外扩散和内扩散模式联合控制。 - The hydrophobic modification could enhance the hydrophobicity on modified silica gel surface, and also improve the diffusion velocity of organic gas molecules in the stage of external diffusion, thus increasing its selectivity of organic gases.
疏水化改性引起硅胶表面疏水性的增强，能提高有机气体分子在吸附的外扩散阶段的扩散速度从而提高其对于有机气体的选择性。