汽车使用可靠性是汽车大修质量评定的重要依据之一。
The use reliability of automobile is one of the most important bases for evaluating the quality of automobile overhaul.
主要介绍了机修厂为控制单体大修时的焊接质量，在实践中采取的一些措施和取得的一些经验。
Describes the machinery maintenance factory for the control of monomer overhaul the welding quality, in practice some of the measures taken, some of the experience.
回顾146管铅列管型电除雾器的大修技术改造情况及其质量控制要求，总结投入生产后的效果。
This paper reviews the maintenance and innovation of the lead shell and tube electric defroster with 146 pipes, as well as its quality control. Its effect in production is also summarized.
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