
Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells (ISO 4590:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells (ISO 4590:2016)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻