#refrigeration_system__refrigerationsystem  a cooling system for chilling or freezing (usually for preservative purposes)
  supertype:  #cooling_system__coolingsystem__cooling  a mechanism for keeping something cool; "the cooling was overhead fans"
  part of:  #refrigerator__icebox  white goods in which food can be stored at low temperatures
  part of:  #refrigerator_car  a freight car that is equipped with refrigeration system

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