
Clay Masonry Units - Part 2: Thermal Insulation Units And Vertically Perforated Units Of Bulk Density Classes <=1,0
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Clay Masonry Units - Part 2: Thermal Insulation Units And Vertically Perforated Units Of Bulk Density Classes <=1,0
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频