No biggie, I guess I don't need a scallop trim on the outer hoop skirt.
没什么大不了的，我想我没有必要再在外侧加一个扇形装饰了。
Hoop residual stress es in the weld vicinity are tensile in both inner and outer surfaces.
焊缝及附近的环向残余应力在内、外表面均为拉应力。
On the outer surface of the pipe, the axial residual stresses of the weld and in its vicinity are compressive while the hoop stresses keep tensile.
在管道接头外表面焊缝中心处的轴向残余应力为压应力，而环向残余应力为拉应力。
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