Description: Rotor resonant frequency calculated assuming that the rotor is supported only in the bearings and that the bearings have infinite stiffness; Name: crit speed (dry)
Description: Rotor resonant frequency calculated considering the additional support and damping produced by the action of the pumped fluid within rotor  ; Name: Wet critical speed
Description: Nomenclature of goods in accordance with a regulation relating to customs tariff and statistical purposes for application to a specific country and / or region. The structure of the customs tariff number is defined by the type otherwise indicated; Name: Customs tariff number