Thus, the magnetic powder in {HEAD ~ this mixing ratio} is specifically suitable for {TAIL ~ magnetic recording} in a long wavelength range 
Thus , the magnetic powder in { HEAD ~ this mixing ratio } is specifically suitable for { TAIL ~ magnetic recording } in a long wavelength range
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH