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一、附图的简单说明图1所示为本发明的炉底辊轴向剖面图。图2所示为过去的炉底辊轴向剖面图。
Brief Description of the Drawings Fig. 1 is an axial sectional view of a hearth roll according to the present invention. Figure 2 shows an axial section through the hearth of the past.