It would also be preferable for {TAIL ~ the dispersed particles} to include at least one oxide selected from a group consisting of silicon oxide, aluminum oxide, {HEAD ~ zirconium oxide}, and titanium oxide 
It would also be preferable for { TAIL ~ the dispersed particles } to include at least one oxide selected from a group consisting of silicon oxide , aluminum oxide , { HEAD ~ zirconium oxide } , and titanium oxide
OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH