Before studying the permeability of this dust, basic precautions need to be taken.

在研究这种粉尘的渗透性之前，需要先做好基本的防护措施。

The acid secreted by this insect has high permeability.

这种昆虫分泌出的酸液具有很强渗透性。

Scientists began to test the permeability of the new material.

科学家开始测试新材料的磁导率。

The solubility, stability in gastrointestinal tract, membrane permeability and presystemic metabolism of drugs were the major factors on oral drug absorption.

药物的溶解性，在胃肠道中的稳定性，膜的通透性和全身代谢是影响口服药物吸收的主要因素。

The permeability change is a reversible course.

其通透性的变化为一个可逆的过程。

However, the relative permeability to water was significantly reduced.

然而，水的相对渗透率将明显减小。

The cables allow visual permeability so as to not block it off completely.

电缆的视觉渗透性可以使它不完全封闭。

The permeability of a soil is important for calculations of underground flow.

土的渗透性对于地下液流的计算很为重要。