研究了收弧坑的接头性能，其抗拉强度和伸长率均不低于中间焊缝。

The weld mechanical properties of the joint at the end of the weld were...

youdao

研究了收弧坑的接头性能，其抗拉强度和伸长率均不低于中间焊缝。

The weld mechanical properties of the joint at the end of the weld were...

youdao