{HEAD ~ Infrared radiation} gives {TAIL ~ the best results}, leading to shorter heating time without material degradation 
gives
{ HEAD ~ Infrared radiation } gives { TAIL ~ the best results } , leading to shorter heating time without material degradation
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH