
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)

專家解讀視頻
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)
專家解讀視頻