продолжительность или объём работы(машины и т.п. expectancy is to determine the length or amount of service for which a single unit of equipment should normally be retained before disposal in order that the total ... US Alexander Demidov)
пенсия за выслугу лет(State length-of-service pension: A supplement to the old-age labor pension is paid to state employees, military personnel, and police officers with at least 15 years of service. goo.glКэт)
