短語詞組短語Girth -Welding 環(huán)形焊接hutt girth welding 對(duì)接環(huán)縫焊girth welding machine tool 環(huán)縫焊接機(jī)床girth welding seam 環(huán)焊縫butt girth welding seam 對(duì)接環(huán)焊縫performance of girth welding 環(huán)焊性能girth welding of pipe 管道環(huán)焊girth welding technology 環(huán)焊技術(shù)girth welding joint 環(huán)焊接頭 返回 girth welding