介绍了动车组试运营可靠性数据的来源、故障等级和可靠性指标的定义，通过开展可靠性统计和评估，发现产品的薄弱环节，再经过采取可靠性闭合管理，最终实现了可靠性的目标。%This paper introduces the EMU test operation reliability data source ,fault level and reliability index is defined ,by carrying out the reliability statistics and evaluation ,found product of the weak links ,and then by taking the reliability of closed management ,fi-nally achieve the reliability target .
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