To reduce the hight of edge-line or increase the width of it can reduce greatly the stress difference of metal flow.

减小刃带高度或增加刃带宽度，能使金属流动应力差得到显著降低。

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To reduce the hight of edge-line or increase the width of it can reduce greatly the stress difference of metal flow.

减小刃带高度或增加刃带宽度，能使金属流动应力差得到显著降低。

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