Description: Quantitative information on the duration of usability in years; Name: life of use
Description: quantitative information relating to the utilization duration in years; Name: Useful life
Description: The norm in fixed relation to the feature being described. This defines the parameters that influence the contents of the correlated feature. Type and number of the norm with issue year and issue month must be given, e.g. DIN ISO 4711:YYYY-MM.; Name: Reference norm of the connection, muff A1