Description: difference between the instant value of pressure and the static pressure; Name: pressure of sound
Description: measured dfifference between instantaneous pressure and static pressure; Name: sound pressure
Description: permanent operation, short-term operation or periodic operation characterized by one of more loads and which remains unchanged during a certain period, or, in the case of non-periodic operation, where the load and speed generally change within the permissible operating range; Name: Operation type time sequence of the drive