As with the first embodiment 10, it includes {HEAD ~ a laminated structure} of several layers, {TAIL ~ each} of which layers is formed with a rather uniform and precise thickness 
As with the first embodiment 10 , it includes { HEAD ~ a laminated structure } of several layers , { TAIL ~ each } of which layers is formed with a rather uniform and precise thickness
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH