
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification Part 002: Bar and section; German and English version EN 4700-002:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification Part 002: Bar and section; German and English version EN 4700-002:2016
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻