Description: Characterization of a certificate with respect to the standard or guideline on the basis of which it was created.; Name: Certificate type
Description: classification of a certificate according to the standard or directive on the basis of which it was issued; Name: type of certificate
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