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