A2单元格输入公式=IF(A1="","","处") 或者=if(isblank(a1),"","处")
A2单元格输入公式=IF(A1="","","处")
在A2中输入=if(isblank(a1),"","处")
A2=if(a1<>"","处","")
=if(len(A1),"处","")
=if(a1="","","处")