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1前言可靠性是指产品在规定的条件下和规定的时间内完成规定功能的能力．它是产品的主要属性之一．随着工业的发展和社会对产品要求的提高，可靠性问题日益受到各国的关注，逐渐成为产品竞争的主要目标之一．美国人预言，今后能在竞争中取胜，立足于世界市场的只有那些把握自己
1 Preface Reliability refers to the ability of the product to perform the specified functions under the specified conditions and within the specified time. It is one of the main attributes of the product. With the development of industry and the improvement of product requirements in society, the issue of reliability has drawn increasing attention from all countries and has gradually become one of the major objectives of product competition. Americans predict that in the future to win the competition, based on the world market only those who grasp themselves