In operation, {HEAD ~ the laser beam} 30 from {TAIL ~ the laser} 12 is directed by the mirror 14 to a focusing lens 16, which concentrates or focuses the laser beam 30 into the sintering nozzle 28 
from
In operation , { HEAD ~ the laser beam } 30 from { TAIL ~ the laser } 12 is directed by the mirror 14 to a focusing lens 16 , which concentrates or focuses the laser beam 30 into the sintering nozzle 28
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL 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