短语词组短语single bevel groove weld 单斜槽焊;单斜角槽焊bevel groove weld 斜槽熔接;双斜边坡口焊缝;单斜角槽焊double -bevel butt weld K 形坡口对接焊缝open -single-bevel butt weld 单面坡口对接焊doubel -bevel weld 型对接焊道bevel -groove weld 斜角焊缝 返回 bevel weld