短語(yǔ)詞組短語(yǔ)tack -welding 點(diǎn)固銲;間斷銲LSAW GYH Tack -Welding Machine 預(yù)銲機(jī)tack welding process 預(yù)銲工藝Tack Welding Machine 郃縫預(yù)銲機(jī) 返回 tack welding