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