
Steel Plates And Strips For Pressure Purposes - Part 3: Weldable Fine Grain Steels, Normalized
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Steel Plates And Strips For Pressure Purposes - Part 3: Weldable Fine Grain Steels, Normalized
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻