=IF((IF(ISNA(MATCH($F2,[新日报.xls]入库1!$B$2:$B$501,0)),0,1)+ IF(ISNA(MATCH($F2,[新日报.xls]入库2!$B$2:$B$501,0)),0,1)+IF(ISNA(MATCH($F2,[新日报.xls]领用1!$B$2:$B$501,0)),0,1)+IF(ISNA(MATCH($F2,[新日报.xls]领用2!$B$2:$B$501,0)),0,1)+IF(ISNA(MATCH($F2,$A$2:$A$101,0)),0,1))>0,ROW(C1),0)
帮我解释一下里面的函数都是什么意思吧,谢谢了.