
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)

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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