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发布时间：1979-08-01
实施时间：1979-08-01
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[QJ 1309A-2008] ZL104铸件分散状疏松的分级[现行]
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[QJ A 501-1998] 不锈耐酸钢、耐热钢锻件技术条件[现行]
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- YD/T 1635-2007
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