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