Description: alphanumeric depiction of the manufacturing process of a product regarding ist date, time and conditions of fabrication ; Name: number of production
Description: alphanumeric character sequence assigned to a fabricated product, which allows the date, time and circumstances of fabrication to be traced; Name: fabrication number
Description: ten times the logarithm to the base 10 of the ratio of the sound power of a source, p, to a reference value, p0, expressed in decibels; Name: sound output level