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苏联产的ЖКМ和ЖКМК复合合金,其主要成份(Mg、Si)极不稳定,每一牌号波动范围竟达±20%.
Soviet-made ЖКМ and ЖКМК composite alloys, the main ingredient (Mg, Si) is extremely unstable, each grade fluctuations range as much as ± 20%.