A reasonable segment of reliability theory is perpetrated to the study of failure rates, their properties, connections and applications. The present study focused on failure rate distributions and their shape properties. Failure rates of various generalizations of Lindley distribution are discussed and the distinguishable roles of DUS transformation is also discussed

翻译：可靠理论的合理部分用于研究故障率、其特性、连接和应用程序,本研究的重点是故障率分布及其形状特性,讨论了林德利分布的各种通用故障率,并讨论了DUS转型的可区别作用。