
Technical Drawings - General Principles Of Presentation - Part 24: Lines On Mechanical Engineering Drawings (Iso 128-24:2014, Idt)
出版:Standardiserings-Kommissionen I Sverige

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Technical Drawings - General Principles Of Presentation - Part 24: Lines On Mechanical Engineering Drawings (Iso 128-24:2014, Idt)
出版:Standardiserings-Kommissionen I Sverige
专家解读视频