扩散速率 meaning in Chinese
diffusion rate
rate of diffusion
Examples
- The samples were joined with heat rate of 200 / min , 260 / min , 370 / min
与辐射加热相比，接触面处原子扩散速率加快。 - At the some time , the reaction between ti and al also is an exothermal reaction , so the inner energy is increased sharply which prompt al3ti to decompose and the diffusion rate of ti toward graphite particles and the decrease the inoculation tune
同时加镁后生成的tic颗粒的扩散速率增大，因而增大了tic颗粒的形核数，使生成的tic颗粒更加细小弥散，在复合材料中的所占体积分数增大。 - In the low - temperature - freezing stage , the water is frozen as ice phase , while the solute precipitate as the salt phase . the velocity of ice phase growth ( vf ) in the solution and the velocity of solute diffusion ( vd ) decide that whether the heavy segregation of solute appears
当低温冷冻时,水以冰的形式冻结,溶质则以盐的形式析出,形成冰盐两相;冰相生长速率和溶质扩散速率决定了溶质盐是否发生大的偏聚。 - Upon the foundation of contracted - ball , function equations of conversion rates of grains and time are deduced . it is brought forward that the conversion rates of grains rely on reaction velocity at interface and diffusion velocity in reacted layer and at the same time relate to reaction process
建立了粉粒反应的缩球模型，推导了颗粒反应转换率随时间的变化规律，提出了颗粒反应转换率取决于界面化学反应速率和已反应层内的扩散速率两个因素并与反应进程有关。 - Based on the analysis of gas - solid multiphase catalytic reaction , the chemical reaction model is established . when the reaction is controlled by the chemical dynamic , the reaction rate is introduced by consideration of the adsorption and desorption effects . when the reaction is controlled by mass transfer , the diffusion coefficient is established which can present the flow rate increases in small reynolds domain ; for the internal diffusion , the internal diffusion coefficient is derived , and then the internal diffusion is coupled with chemical reaction to represent the phenomenon that the diffusion and the chemical reaction occur cocurrently
本文在考虑催化转化器载体内发生的传热传质现象的基础上,建立了催化转化器的一维单孔道和三维多孔道传热传质模型;在分析载体内以气-固多相催化反应为特点的工作机理的基础上,建立了催化转化器的化学反应模型:当催化转化处于化学动力学控制区时,引入了考虑吸附、表面反应和脱附的表面化学反应速率公式,当催化转化处于质量输运控制区时,引入了决定外扩散能力的扩散系数公式和和决定内扩散速率的内扩散系数公式,并与化学反应速率相耦合,得出由扩散过程决定的化学反应速率公式。