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作者设计了一种朴缩铸件新型冒口—半保温球形冒口,并从理论和实践上进行了阐述和研究,最后指出了它的优点和应用前景。
The author designed a new type of riser-semi-insulation spherical riser of simple shrink castings, and elaborated and studied theoretically and practically. Finally, its advantages and application prospects were pointed out.