
Technical Drawings - General Principles Of Presentation - Part 60: Views, Cuts And Sections; Additional Conventions
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Technical Drawings - General Principles Of Presentation - Part 60: Views, Cuts And Sections; Additional Conventions
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频