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本文阐述了高难度大型球墨铸铁出口件的研制过程与方法,实现了日本工业标准JISG5502—1989中所规定的各项技术指标
This article describes the difficult large ductile iron export parts of the development process and methods to achieve the Japanese Industrial Standards JISG5502-1989 stipulated in the technical indicators