Description: Design flow rate in the outlet cross-section of the system divided by the outlet cross-section of the system; Name: Average design speed at the plant outlet
Description: Rated flow at the outlet area of the installation divided by the inlet area of the installation; Name: Mean rated velocity at outlet area of the installation
Description: Ten times the logarithm to the base 10 of the ratio of the square of the sound pressure, p, to the square of a reference value, p0, expressed in decibels; Name: Sound pressure level