Description: Date from which the production and / or development process is completed or from which a service is provided completely; Name: Fabrication date
Description: Date from which the production and / or development process is completed or from which a service is provided completely; Name: Date of manufacture
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