1. Both ion diffusion and transport of ions to the root surface by mass flow appear to be dependent on soil moisture content. 离子扩散和通过质体流动把离子运送到根表面，看来似乎都取决于土壤的含水量。
2. Using diffusion device and rat skin, the enhancing effects of menthol on transcutaneous permeation of tinidazole gel were studied. 采用透皮扩散装置和鼠皮进行了薄荷脑促进替硝唑凝胶经皮渗透作用的研究。
3. The experimental results show that surface mortar layer can significantly reduce the chloride ion diffusion coefficient of concrete. 结果表明，致密的表面砂浆层能显著地降低混凝土本体的氯离子扩散系数。
英英解释
n.
1. (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result
2. the spread of social institutions (and myths and skills) from one society to another
3. the property of being diffused or dispersed
4. the act of dispersing or diffusing something
