At the end of its operating time, the component has, for example, a depletion of {TAIL ~ aluminium} in {HEAD ~ a region} near the surface 
At the end of its operating time , the component has , for example , a depletion of { TAIL ~ aluminium } in { HEAD ~ a region } near the surface
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH