If section 66 is selected to be porous, {HEAD ~ the porosity} must be sufficient to enable {TAIL ~ the deposited first material} of the NH3 sensing electrode to make contact with the bottom electrolyte 58 
sufficient to enable
If section 66 is selected to be porous , { HEAD ~ the porosity } must be sufficient to enable { TAIL ~ the deposited first material } of the NH3 sensing electrode to make contact with the bottom electrolyte 58
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH