Separating {HEAD ~ the solid electrolyte layer} 58 from species selective electrode 50 is {TAIL ~ an insulating layer} 60 having a section 54 including an opening pattern 66 and a dense or solid section 55 
is
Separating { HEAD ~ the solid electrolyte layer } 58 from species selective electrode 50 is { TAIL ~ an insulating layer } 60 having a section 54 including an opening pattern 66 and a dense or solid section 55
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH