一、前言在机械产品的可靠性研究已经引起世界各国有关部门工程科技人员的普遍重视。人们充分认识到,产品不仅要有好的性能,还必须有高的可靠性(寿命)指标。否则产品就会丧失其使用价值,在商品市场上没有竞争能力。鉴于机械产品的特殊性,如寿命比较长,结构比较复杂,价格比较昂贵,因此它们的可靠性研究 I. Preface The reliability study of mechanical products has attracted the universal attention of engineering and technical personnel of relevant departments of all countries in the world. People fully realize that the product not only has good performance, but also must have high reliability (life) indicators. Otherwise the product will lose its use value, there is no competitiveness in the commodity market. In view of the special nature of mechanical products, such as longer life, more complex structure, the price is more expensive, so their reliability study