NF A05-311-1995 Corrosion of metals and alloys Determination of dezinfication resistance of brass 《金属和合金材料的腐蚀 黄铜脱锌测定》.pdf

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GB T 3879-2008 钢结硬质合金材料毛坯.pdf

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GB T 3879-1983 钢结硬质合金材料毛坯.pdf

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MSZ 771 1 lap-1969 《合金材料》.pdf

MSZ 13723 1-1982 《玻璃和陶器用可焊接合金材料质量》.pdf

MSZ 13721 1-1971 《阻隔合金材料质量》.pdf

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