
BS ISO 683-2. Heat-treatable steels, alloy steels and free-cutting steels. Part 2 . Alloy steels for quenching and tempering
出版:British Standards Institution

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BS ISO 683-2. Heat-treatable steels, alloy steels and free-cutting steels. Part 2 . Alloy steels for quenching and tempering
出版:British Standards Institution
專家解讀視頻