Referring to FIG 3, another preferred embodiment in {HEAD ~ accordance} with {TAIL ~ the present invention} is shown in a cross sectional view 
with
Referring to FIG 3 , another preferred embodiment in { HEAD ~ accordance } with { TAIL ~ the present invention } is shown in a cross sectional view
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH