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device for einschraenkung of kavitationserscheinungen in pipelines, the fluessigkeiten with great speed durchstroemt and in which the fluessigkeitsstrom due to direction or querschnittsveraenderungen from the wall iosloest
device for einschraenkung of kavitationserscheinungen in pipelines, the fluessigkeiten with great speed durchstroemt and in which the fluessigkeitsstrom due to direction or querschnittsveraenderungen from the wall iosloest