
STEEL WIRE ROPES - SAFETY - PART 4: STRANDED ROPES FOR GENERAL LIFTING APPLICATIONS
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
STEEL WIRE ROPES - SAFETY - PART 4: STRANDED ROPES FOR GENERAL LIFTING APPLICATIONS
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻