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The welded metal consists of grain boundary ferrite, ferrite side plate and acicular ferrite.
焊缝组织主要由晶界铁素体、侧板条铁素体和针状铁素体组成；
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The welded metal consists of grain boundary ferrite, ferrite side plate and acicular ferrite.
焊缝组织主要由晶界铁素体、侧板条铁素体和针状铁素体组成；
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