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下图为我厂工人革新的一种简易气焊割圆工具。这种工具构造简单,省去了划圆周线,减轻了割圆时的劳动强度,切割质量也
The following figure is a simple gas welding cutter of our factory. The utility model has the advantages of simple structure, eliminating the need to circle the circumference, reducing the labor intensity during cutting, the cutting quality