{TAIL ~ The oxide layer} 22 has a thickness, for example, in a range of 1000 angstroms to {HEAD ~ 8000 angstroms} 
{ TAIL ~ The oxide layer } 22 has a thickness , for example , in a range of 1000 angstroms to { HEAD ~ 8000 angstroms }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD