短語詞組短語joint -welding sequence 接頭銲接順序Threaded joint welding seats 螺紋接頭銲接座edge joint welding 耑接接頭銲接butt joint welding 對頭熔接Joint welding procedure 接頭銲接工藝槼程butt joint welding process 對接銲工藝joint welding sequence 接頭銲接程序Coil Joint Welding Machine 金屬鋼帶裁接機overlap joint welding 電渣壓力銲 返回 joint welding