Description: Region, zone or union for which the specified customs tariff number is applicable in terms of content and structure; Name: Customs Tariff Number Region
Description: Region, zone or union for which the declared tariff number is applicable in terms of content and structure; Name: Region of customs tariff number
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