右手摸大頭 左手抓小頭
ISO 724:1993 - ISO general-purpose metric screw threads -- Basic dimensions .......你沒事吧This standard was last reviewed* in 2014. *ISO standards are reviewed every five years. This standard is also included in the online collection: Fasteners and screw threads. Preview ISO 724:1993 Abstract Specifies the basic dimensions of metric threads in...
全文閱讀