Description: Ratio of the power requirement of the pump reduced by the mechanical power losses  to the power requirement of the pump under certain working conditions.; Name: mech eff
Description: proportion of the pump power input, p, available after satisfying the mechanical power losses, pj,ab, at given operating conditions; Name: mechanical efficiency
Description: A suitable, maximum (usually rounded) value of a frequency which is used for the description, designation or identification of a part, device, operating resource, facility or set of equipment; Name: Max. nominal frequency