Containers 58 and 59 of silicon and oxygen , respectively, are coupled to tube 37 via {HEAD ~ pipe} 40 under {TAIL ~ the control} of flow controllers 61 and 62, respectively 
under
Containers 58 and 59 of silicon and oxygen , respectively , are coupled to tube 37 via { HEAD ~ pipe } 40 under { TAIL ~ the control } of flow controllers 61 and 62 , respectively
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH