Description: an Anglo-American unit in mechanics for the rotational speed, for example of a rotary axis; Name: RPM
Description: Number of revolutions of the pump in a given time required to meet the rated conditions ; Name: Rated speed
Description: through a surface, product of the sound pressure, p, and the component of the particle velocity, un, at a point on the surface in the direction normal to the surface, integrated over that surface; Name: sound power