
Air filters for general ventilation Part 2: Measurement of fractional efficiency and air flow resistance (ISO 16890-2:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Air filters for general ventilation Part 2: Measurement of fractional efficiency and air flow resistance (ISO 16890-2:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻