The working medium for heat cycle 1, wherein 1,1 dichloro 2,3,3,3 tetrafluoropropene is contained in {TAIL ~ a content} of {HEAD ~ at least 60 mass %} in the working medium for heat cycle 
The working medium for heat cycle 1 , wherein 1,1 dichloro 2,3,3,3 tetrafluoropropene is contained in { TAIL ~ a content } of { HEAD ~ at least 60 mass % } in the working medium for heat cycle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH