本文研究耗损型产品可靠度的评定方法 .耗损型产品的可靠度随着每次的使用 ,可靠度会有所降低 .根据多次使用的试验数据 ,推断产品在某次使用之后的可靠度 .这是一个变动母体的统计推断问题 .本文在变动母体的假定下给出了耗损型产品可靠度的置信下限 This article studies the method of assessing the reliability of consumable products.As the reliability of consumable products declines with each use, the reliability of a product after a certain use is deduced based on the repeated use of the test data. This is a maternal statistical inference problem.This paper gives the lower confidence limit of the lossy product reliability under the assumption of changing matrices