
Guidelines for drawing up requirements for the design, construction, operation and maintenance of public drinking water supply systems (DVGW Code of practice)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Guidelines for drawing up requirements for the design, construction, operation and maintenance of public drinking water supply systems (DVGW Code of practice)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻