
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)

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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)
专家解读视频