Description: Total head developed by the pump at a rate of flow corresponding to the best efficiency; Name: Optimal head
Description: Total head developed by the pump at a rate of flow corresponding to the best efficiency; Name: Optimum head
Description: determined 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