
Aerospace series - Test method for metallic materials Part 4: Acceptance criteria; German and English version FprEN 4050-4:2011
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Aerospace series - Test method for metallic materials Part 4: Acceptance criteria; German and English version FprEN 4050-4:2011
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻