.... refrigerant gas R 407A (difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane, zeotropic mixture with approximately 20% difluoroethane and 40% pentafluoroethane).
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
