菲克第二定律，作为菲克定律的进一步发展，它揭示了非稳态扩散过程中的重要关系。在距离x处，该定律表明，扩散物质浓度随时间的变化率，等于扩散通量随距离改变的负梯度。具体来说，我们可以用数学表达式来描述：(2) 式中，扩散通量与浓度和距离的关系可以写作：\[ \frac{\partial C}{\partial t} = ...
2) Fick's second law of diffusion Fick扩散第二定律 1. METHODS A kinetic equation for Chinese traditional medicine extraction process was presented based onFick's second law of diffusion. 方法 基于Fick扩散第二定律 ,建立中药提取过程的动力学方程 ,并以实验对其进行检验。
Fick's second law of diffusionFick扩散第二定律 1.METHODS A kinetic equation for Chinese traditional medicine extraction process was presented based on Fick's second law of diffusion.方法 基于Fick扩散第二定律 ,建立中药提取过程的动力学方程 ,并以实验对其进行检验。 3)Fick' law of diffusionFick第一...
Fick's second law, also known as simply the "diffusion equation," is derived from Fick's first law and the conservation of matter. The diffusion equation describes the evolution of concentration profiles in space and time. Additional driving forces for diffusion can include electrical potential ...
2)Fick's second law of diffusionFick扩散第二定律 1.METHODS A kinetic equation for Chinese traditional medicine extraction process was presented based on Fick's second law of diffusion.方法 基于Fick扩散第二定律 ,建立中药提取过程的动力学方程 ,并以实验对其进行检验。 3)Fick's second diffusion lawF...
METHODS A kinetic equation for Chinese traditional medicine extraction process was presented based onFick's second law of diffusion. 方法 基于Fick扩散第二定律 ,建立中药提取过程的动力学方程 ,并以实验对其进行检验。 补充资料:菲克扩散定律 分子式: ...
Fick "s second law."菲克第二定律。From the gas diffusion theory to study gas diffusion on the wet air, to Fick theory analysis, puts forward the influencing factors of gas diffusion.从气体扩散理论出发，研究了湿空气下的天然气扩散，以菲克理论进行理论分析，重点提出了气体扩散的影响因素。Brad Fick...
1.1 Diffusion in solids —— Fick’s second Law 推导过程(二) derivation: Fick’s first law + mass balance 考虑如图所示的扩散系统,扩散物质沿x方向通过横截面积为A (=ΔyΔz)、长度为Δx的微元体,假设流入微元体(x处)和流出微元体(x+Δx处))的扩散通量分别为Jx和Jx+Δx,则在Δt时间内微元...
fick diffusion law 英 美 [fɪk dɪˈfjuʒən lɔː]网络 斐克扩散定律