1) U notch
U型切口
1.
Three dimensional elasto-plastic stress and strain fields near notch root of deep double edges U notched plate with finite thickness;
有限厚双边U型切口板的三维弹塑性有限元分析
2) a"U"Circumferential Notch
U型环周切口
3) U-notchspecimen
U型切口试样
4) single U-groove
U型坡口
5) U-port
U型端口
6) u-type ngroove soldering
U型坡口焊
补充资料：巴伦斯氏切口