{TAIL ~ Method} of soldering joints by moving them through {HEAD ~ a target area} on which a stream of hot gas is focused 
{ TAIL ~ Method } of soldering joints by moving them through { HEAD ~ a target area } on which a stream of hot gas is focused
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH