
COLD HEADING AND COLD EXTRUDING STEELS - TECHNICAL DELIVERY CONDITIONS FOR CASE HARDENING STEELS
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
COLD HEADING AND COLD EXTRUDING STEELS - TECHNICAL DELIVERY CONDITIONS FOR CASE HARDENING STEELS
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻