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[国外标准] BS 3146-2-1975 Specification for Investment castings in metal — Part 2 Corrosion and heat resisting
369.91 KB2020-11-27
[国外标准] BS 3146-1-1974 Specification for Investment castings in metal — Part 1 Carbon and low alloy steels
390.21 KB2020-11-27
508.55 KB2019-11-29
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237.03 KB2019-11-06