AECMA PREN 4384-1997 Aerospace Series Heat Resisting Alloy NI-CH1303 (NiCo20Cr20Mo5Ti2Al) Non Heat Treated Remelting Stock Edition P 1《航空航天系列.抗热合金NI-CH2601(NiCr19Fe19Nb5Mo3)非热处理重熔..pdf

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