
Clay Masonry Units - Part 5: Lightweight Horizontally Perforated Clay Masonry Units And Lightweight Horizontally Perforated Day Masonry Panels
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Clay Masonry Units - Part 5: Lightweight Horizontally Perforated Clay Masonry Units And Lightweight Horizontally Perforated Day Masonry Panels
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频