
Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻