Reliability data is the basis of the work of reliability, which is the important information of improving the quality of product, ameliorating use and maintenance methods. It plays an important effect for the development of reliability technology. This essay introduces the source of the data, the sorts of the data type, the requirements and the lfow of data col ection.%可靠性数据是开展可靠性工作的基础，是提高产品质量、改进使用和维修方法的重要资料，其对推进可靠性技术的发展起着重要作用。本文重点介绍了数据的来源、数据类型的分类、数据收集的要求及流程。
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