In contrast to this, γ alumina having a cubic system spinel type crystal structure has {TAIL ~ many lattice defects} in which {HEAD ~ oxygen atoms} lack because, e.g., the crystal structure is unnatural 
in
In contrast to this , γ alumina having a cubic system spinel type crystal structure has { TAIL ~ many lattice defects } in which { HEAD ~ oxygen atoms } lack because , e.g. , the crystal structure is unnatural
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH