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乌克兰科学院铸造研究所研究了获得高强度铸铁的新方法——型内变质法。它能满足工厂所有高强度铸件的生产要求。1984年
Institute of Foundry, Ukrainian Academy of Sciences has studied a new method for obtaining high-strength cast iron - the in-mold modification method. It can meet the production requirements of all high-strength castings in the factory. 1984