
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)

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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)
专家解读视频