The invention is also directed to {HEAD ~ the interstage cooling} of {TAIL ~ one refrigeration cycle} by the other refrigeration cycle 
of
The invention is also directed to { HEAD ~ the interstage cooling } of { TAIL ~ one refrigeration cycle } by the other refrigeration cycle
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH