Drugs may cross a biologic barrier by passive diffusion, facilitated passive diffusion, active transport, or pinocytosis.
药物可通过被动扩散、易化被动扩散、主动转运或胞饮作用等方式穿越生物屏障。
The decrease of active surface area in the anode caused by CO2 accumulation is reduced through treating the diffusion layer and catalyst layer with PTFE, resulting in increased DMFC performance.
通过对阳极扩散层和催化剂层的疏水处理，降低了阳极产生的CO2导致的催化活性比表面积损失，有效地提高了电池性能。
Numerical results indicate how the various parameters such as bulk resistivity and carrier diffusion length in the active region affect the profiles.
以数值结果揭示外延层的体电阻率及厚度、活性区载流子的扩散长度、模增益和丝区宽度等参量对上述各种分布的影响。
In our case, the thin peripheral rim of restricted diffusion may represent an active edge of demyelination.
在我们的病例中，周边的弥散受限的薄壁环状影可能代表脱髓鞘病变的活动性边缘。
The effect of active carbon granularity-on properties of air diffusion electrode is introduced in this article in order to improve the permeability and electrochemical property of layer.
为了改善空气扩散电极的电化学性能，对活性炭粒度分布对空气扩散电极性能的影响进行了研究。
To define the influence of active and passive smoking on pulmonary diffusion function.
目的探讨吸烟和被动吸烟对肺通气和肺弥散功能的影响。
Active foci of demyelination may demonstrate restricted diffusion.
脱髓鞘的活动性的病灶可以显示为弥散受限。
Active foci of demyelination may demonstrate restricted diffusion.
脱髓鞘的活动性的病灶可以显示为弥散受限。
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