A content of the hydrofluorocarbon is from {TAIL ~ 1 to 60 mass %} in {HEAD ~ the working medium} for heat cycle 
A content of the hydrofluorocarbon is from { TAIL ~ 1 to 60 mass % } in { HEAD ~ the working medium } for heat cycle
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH