这个需要用Excel365或2019版本中的超级文本连接函数textjoin,如图,
J2=TEXTJOIN("/",1,IF((LEFT(TRIM(MID(SUBSTITUTE(C2,"/",REPT(" ",99)),{1,2}*99-98,99)))="1")*(LEN(TRIM(MID(SUBSTITUTE(C2,"/",REPT(" ",99)),{1,2}*99-98,99)))=11),TRIM(MID(SUBSTITUTE(C2,"/",REPT(" ",99)),{1,2}*99-98,99)),""))
同时按Ctrl+Shift+Enter三键输入数组公式,下拉