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This article is written to explain how to improve the efficiency of riser feeding for cast steel items.
本文针对提高铸钢件冒口补缩效率问题，给出了微珠保温冒口的配方及生产工艺；
youdao
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This article is written to explain how to improve the efficiency of riser feeding for cast steel items.
本文针对提高铸钢件冒口补缩效率问题，给出了微珠保温冒口的配方及生产工艺；
youdao