
Bs 1919 Hacksaw Blades. Part 1: Specification For Hand And Machine Hacksaw Blades - Dimensions For Lengths Up To 750mm. And Pitches Up To 6.3mm.
出版:British Standards Institution

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Bs 1919 Hacksaw Blades. Part 1: Specification For Hand And Machine Hacksaw Blades - Dimensions For Lengths Up To 750mm. And Pitches Up To 6.3mm.
出版:British Standards Institution
专家解读视频