
Pumps - Rotodynamic Pumps - Glandless Circulators - Part 1: General Requirements And Procedures For Testing And Calculation Of Energy Efficiency Index (eei)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Pumps - Rotodynamic Pumps - Glandless Circulators - Part 1: General Requirements And Procedures For Testing And Calculation Of Energy Efficiency Index (eei)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频