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