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