短语词组短語weld arc spot weld 電弧點銲縫weld arc ot weld 電弧點銲縫gas arc tungsten weld 鎢極氬弧銲single arc tandem weld 單弧串列銲arc -weld inversion 逆變弧銲arc spot weld [機]電弧點銲;電弧點銲縫plasma arc overlaying weld 等離子弧堆敷arc seam weld [機]電弧縫銲;電弧縫銲縫 返回 arc weld