Description: Logarithm of the ratio of a given sound pressure to a reference sound pressure. The sound pressure level in decibels is the same as the 20-fold logarithm of this ratio; Name: acoustic pressure level
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
Description: name of material from which the dynamic seal is made; Name: material of dynamic seal