
Contract Procedure For Building Works - Part C: General Technical Specifications For Building Works - Damp-proofing Against Non-pressurized Water
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Contract Procedure For Building Works - Part C: General Technical Specifications For Building Works - Damp-proofing Against Non-pressurized Water
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻