
Construction Drawings - General Rules For Execution Of Production Drawings For Prefabricated Structural Components
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Construction Drawings - General Rules For Execution Of Production Drawings For Prefabricated Structural Components
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻