
Piston Rings For General Engineering; N-rings, Oil Scraper Rings, 200 Up To 400 Mm Nominal Diameter
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Piston Rings For General Engineering; N-rings, Oil Scraper Rings, 200 Up To 400 Mm Nominal Diameter
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻