
Fasteners - Technical Delivery Conditions - Surface Discontinuities On Bolts And Screws
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Fasteners - Technical Delivery Conditions - Surface Discontinuities On Bolts And Screws
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频