Khuếch tán (Diffusion)
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Cập nhật: 28/08/2026 20:31
Molecular movement from a region of higher concentration to lower concentration.
Diffusion is driven by random molecular motion and concentration gradients. In mass transfer analysis, diffusion is commonly described using Fick's laws and is important in gases, liquids, solids, porous media, biological tissues, and polymer membranes.