
HEAT-TREATED STEELS, ALLOY STEELS AND FREE-CUTTING STEELS - PART 17: BALL AND ROLLER BEARING STEELS (ISO 683-17:2014)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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HEAT-TREATED STEELS, ALLOY STEELS AND FREE-CUTTING STEELS - PART 17: BALL AND ROLLER BEARING STEELS (ISO 683-17:2014)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频