SEM analysis indicated that evenly distributed fine crystal grain was the reason of good bending strength.

SEM分析认为:造成材料抗弯强度增加缓慢或下降的原因是材料晶粒粗大,晶粒分布不均匀.

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The precautionary measures and major reason of the bigger crystal grain size cast - rolling stocks are discussed.

论述了铸轧铝板坯产生粗大晶粒的主要原因及其预防措施.

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The crystal grain size is the important factor for performance of cast - rolling aluminium stocks.

晶粒度是影响铸轧铝板坯性能的重要因素.

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