A process 1, wherein {HEAD ~ the powder} of {TAIL ~ a synthetic resin} comprises fine particles having a spherical shape 
of
A process 1 , wherein { HEAD ~ the powder } of { TAIL ~ a synthetic resin } comprises fine particles having a spherical shape
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH