一、前言制造者所面临的最迫切问题之一是,某种产品能否达到预计的使用目标。最能为人接受的确定可靠性的方法是实际试验;然而,大量的试验是很昂贵的。因此,制造者往往依靠其他的方法来确定产品的质量。机械产品,包括汽车产品在内,其寿命现象服从正态、对数正态或魏布耳统计分布。近年 I. Preface One of the most pressing issues manufacturers face is whether a product can meet its projected usage goals. The most well-accepted method of determining reliability is the actual test; however, a large number of tests are expensive. Therefore, manufacturers often rely on other methods to determine the quality of their products. Mechanical products, including automotive products, including the life expectancy phenomenon obeys normal, lognormal or Weibull statistical distribution. in recent years