{HEAD ~ The proportion} of the hydroxide phase is in {TAIL ~ the range} 0.15% to 3% by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles 
is in
{ HEAD ~ The proportion } of the hydroxide phase is in { TAIL ~ the range } 0.15 % to 3 % by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH