Glass, alcohol and {HEAD ~ a small amount} of {TAIL ~ water} are placed in a ball mill, and mixed and ground therein for about 20 hours to give an average glass particle diameter of about 1 5 μm 
of
Glass , alcohol and { HEAD ~ a small amount } of { TAIL ~ water } are placed in a ball mill , and mixed and ground therein for about 20 hours to give an average glass particle diameter of about 1 5 μm
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH