factor method
modification of reference service life (3.1.101.1)(3.1.101.2) by factors to take account of the specific in-use conditions (3.1.53.1)(3.1.53.2)(3.1.53.3)
factor method
modification of reference service life (3.1.101.1)(3.1.101.2) by factors to take account of the specific in-use conditions (3.1.53.1)(3.1.53.2)(3.1.53.3)