
Iso 683 Heat Treatable Steels, Alloy Steels And Free-cutting Steels - Part 15: Valve Steels For Internal Combustion Engines (iso/dis 683-15)
出版:British Standards Institution

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Iso 683 Heat Treatable Steels, Alloy Steels And Free-cutting Steels - Part 15: Valve Steels For Internal Combustion Engines (iso/dis 683-15)
出版:British Standards Institution
專家解讀視頻