The power generation process 4 wherein {HEAD ~ the stream} of {TAIL ~ steam} is passed through a body of oil 
The power generation process 4 wherein { HEAD ~ the stream } of { TAIL ~ steam } is passed through a body of oil
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH