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4 铸锭的表面缺陷和几何缺陷直接水冷半连续铸造的变形铝合金铸锭,其表面通常有偏析瘤(偏析浮出物、偏析
4 ingot surface defects and geometric defects Direct water-cooled semi-continuous casting of deformed aluminum alloy ingot, the surface is usually segregated tumor (segregation of the precipitate segregation