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现行 QJ 1842A-2011
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结构钢、不锈钢熔焊技术要求 Technical requirements of structural steel and stainless steel fusion welding
发布日期: 2011-07-19
实施日期: 2011-10-01
分类信息
发布单位或类别: 中国-行业标准-航天
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