Description: Language-independent, unambiguous code of a class in a class system; Name: code of the transmission class
Description: language-independent, unambiguous code of a class within a class system; Name: Class code of the transmission
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