{TAIL ~ A supply} of material connected to {HEAD ~ the deposition} means sends pressurized material thereto 
{ TAIL ~ A supply } of material connected to { HEAD ~ the deposition } means sends pressurized material thereto
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH