
Refrigerating systems and heat pumps - Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Refrigerating systems and heat pumps - Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻