
STEELS FOR QUENCHING AND TEMPERING - PART 2: TECHNICAL DELIVERY CONDITIONS FOR NON ALLOY STEELS
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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STEELS FOR QUENCHING AND TEMPERING - PART 2: TECHNICAL DELIVERY CONDITIONS FOR NON ALLOY STEELS
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频