The solubility, stability in gastrointestinal tract, membranepermeability 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。
2
In this paper, experiment of cell membranepermeability in college teaching materials of was improved.
对高等学校教材中“细胞膜的渗透性”这一实验作了进一步改进。
3
The results indicate membranepermeability and cooling rate are main factors that affect the cell shrinkage.