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.

youdao

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.

youdao