?向上立焊
... 返修焊rewelding 向上立焊vertical up welding 向下立焊vertical down welding ...
?立向上焊
... 变速送丝 alternate wire-feed system 立向上焊 Vertical up welding 电弧静特性 Static characteristic of arc ...
?向下立焊
... rewelding 向上立焊 vertical up welding 向下立焊 vertical down welding 平焊（俯焊） ...
向上立焊
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。