
Fire-resistance tests - Elements of building construction Part 9: Specific requirements for non-loadbearing ceiling elements - Technical Corrigendum 1
出版:International Organization for Standardization

專家解讀視頻
Fire-resistance tests - Elements of building construction Part 9: Specific requirements for non-loadbearing ceiling elements - Technical Corrigendum 1
出版:International Organization for Standardization
專家解讀視頻