
MECHANICAL PROPERTIES OF FASTENERS - BOLTS, SCREWS STUDS AND NUTS MADE OF NON-FERROUS METALS
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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MECHANICAL PROPERTIES OF FASTENERS - BOLTS, SCREWS STUDS AND NUTS MADE OF NON-FERROUS METALS
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻