
Aerospace series - Test method for metallic materials Part 3: Reference blocks; German and English version FprEN 4050-3:2011
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Aerospace series - Test method for metallic materials Part 3: Reference blocks; German and English version FprEN 4050-3:2011
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻