This paper discusses the problem for log-normal data, the estimator is provided, the strong consistency is proved and simulation studies show the estimator can be used in practice. 本文對于對數正態(tài)總體研究可靠性曲線(xiàn)的估計問(wèn)題,給出了估計方法,證明了估計量的一致強相合性,用計算機模擬試驗說(shuō)明方法的可用性。