At the same time, the injector is arranged to deliver fuel to {HEAD ~ the incoming air} in {TAIL ~ a manner} which promotes mixing of the air and fuel for combustion 
in
At the same time , the injector is arranged to deliver fuel to { HEAD ~ the incoming air } in { TAIL ~ a manner } which promotes mixing of the air and fuel for combustion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH