
TECHNICAL DRAWINGS - SIMPLIFIED REPRESENTATION OF PIPELINES - PART 3: TERMINAL FEATURES OF VENTILATION AND DRAINAGE SYSTEMS (ISO/FDIS 6412-3:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
TECHNICAL DRAWINGS - SIMPLIFIED REPRESENTATION OF PIPELINES - PART 3: TERMINAL FEATURES OF VENTILATION AND DRAINAGE SYSTEMS (ISO/FDIS 6412-3:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频