
Technical drawings - General principles of presentation Part 30: Basic conventions for views (ISO 128-30:2001)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Technical drawings - General principles of presentation Part 30: Basic conventions for views (ISO 128-30:2001)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频