
Plain, reinforced and prestressed concrete structures Part 4: Supplementary specifications governing the production and conformity of precast concrete elements
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Plain, reinforced and prestressed concrete structures Part 4: Supplementary specifications governing the production and conformity of precast concrete elements
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频