对于不同的有机溶剂分子，因分子大小差异可能无法进入到凝胶孔内，干燥过程

For different organic solvent molecules, due to the difference in molecular size, it may not be able to enter the gel pores, and the gel water is difficult to be extracted during the drying process, resulting in the inability of nitrogen molecules to enter and exhibit a lower peak.

For different organic solvent molecules, due to differences in molecular size may not be able to enter the gel hole, the drying process gel water is difficult to extract, resulting in nitrogen molecules can not enter the show a lower peak.

For different organic solvent molecules, due to molecular size differences may not be able to enter the gel hole, drying process is difficult to extract gel water, resulting in nitrogen molecules can not enter the lower peak.<br>