<div>Dear wien users,</div>  <div>       </div>  <div>        Recently,I calculated the energy loss near edge structure of wurtize AlN. When I took into account the relative orientation between sample and beam,the part of  spectrum was appeared under the vertical axis, I don't konw why.</div>  <div> </div>  <div>       Any reply will be appreciate!<BR><BR>                                                                                
 Sincerely!<BR><BR>                                                                                 BoKang<BR></div><p> 
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