這哥一出,整個世界頓時黯然....
ISO 898-7:1992 - Mechanical properties of fasteners -- Part 7: Torsional test and minimum torques fo這哥一出,整個世界頓時黯然....This standard was last reviewed* in 2009. *ISO standards are reviewed every five years. This standard is also included in the online collection: Fasteners and screw threads. Preview ISO 898-7:1992 Abstract Applies to bolts and screws of property classes 8...
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