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