以乙酸乙酯为展开剂,在3块硅胶板上对极性物质A进行展开,结果如下:板[img=~/QImg/2013-10-14-10-14-34/image061.jpg]R[img=~/QImg/2013-10-14-10-14-34/image052.jpg]=0.55,板[img=~/QImg/2013-10-14-10-14-34/image001.jpg]R[img=~/QImg/2013-10-14-10-14-34/image052.jpg]=0.2,板[img=~/QImg/2013-10-14-10-