Бракованная партия(If there occurs in any delivery of Goods or in any quantity of Goods delivered in any one month defects affecting more than ten per cent of the Goods so delivered ya)
срок безаварийной эксплуатации(A maintenance free operating period is defined as a period of time (or appropriate units) during which a system is both operational and is able to carry out its required function(s) without maintenance activities and without encountering failures. VLZ_58)