connective weld
... composite weld紧密焊缝; 强度密封焊缝 connective weld联系焊缝 continuous weld process连续式炉焊管法 ...
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得出了铁素体形态与焊缝韧性之间的联系；
The relationship between various morphologies of the ferrite and the toughness of welds has been found.
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