[O] How to generate subscript followed overstriking in org-mode

[XP Chen]

Hi, everyone,

    How to generate subscript followed overstriking when export to latex or 
pdf, I want use general org-mode method to generate html format also.

    Mix latex is ok as:      \textbf{d1}_{sub}     

    But org method like:  " *d1*_{sub} "  or   " *d1* _{sub} " cannot achieve.  
  

    According to 
https://emacs.stackexchange.com/questions/31149/superscript-or-subscript-inside-italics-in-org-buffer-does-not-change-text-app
 ,  " *d1*._{sub} "  or " *d1* ._{sub} " can also done except a point in the 
char...

   So anyone have idea?

    Thanks.