HB_Z 418.2-2017 民用飞机用铝合金的热处理工艺 第2部分：变形铝合金热处理工艺.pdf

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HB_Z 418.1-2017 民用飞机用铝合金的热处理工艺 第1部分：铸造铝合金热处理工艺.pdf

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