现行 QJ 502A-2001
铝合金、铜合金锻件技术条件 铝合金、铜合金锻件技术条件 Specification for aluminium alloy and copper alloy forgings
发布日期:2001-11-15
实施日期:2002-02-01
分类信息
标准简介
相似标准/计划/法规
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最后更新时间 2025-08-30