- 單 singular number fate; destin ...
- u U, u (pl. U's, u's ) 1 ...
- 形 form; shape
- 坡 slope
- 口 mouth
- 丁字 T-shaped
- 接頭 connect; join; joint
- 單u形坡口對(duì)接接頭 single u butt joint
- 單j形坡口接頭 single j joint
- 雙j形坡口t字接頭 double j tee joint; double-j tee joint
- 單邊u形坡口角接頭 single u corner joint; single-u corner joint
- 雙面u形坡口接頭 double u joint; double-u joint
- u形坡口 u groove; u-groove
- 單面u形坡口 single u groove
- 雙u形坡口 double-u groove
- 雙面u形坡口 double u groove
- 形坡口接頭 double j joint; single j butt joint
- 丁字接頭 t joint; t-joint; tee joint
- 雙u形坡口焊 double u-weld
- 雙面u形坡口焊 open double u groove weld; open-double-u groove weld
- j形坡口接頭 single j butt joint
- 丁字接頭焊縫 t weld
- 留縫丁字接頭 open tee joint; open-tee joint
- 平頭丁字接頭 plain tee joint; square tee joint
- 斜角丁字接頭 inclined tee joint
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