Therefore, VUV is the most desirable form of {HEAD ~ energy} for {TAIL ~ photon assisted transport polymerization} 
for
Therefore , VUV is the most desirable form of { HEAD ~ energy } for { TAIL ~ photon assisted transport polymerization }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL