短语词组短語fire trench welding 鍛銲fire cracker welding 銲條預置式銲法;[機]躺銲;銲條預置武銲法;躺銲surfacing by fire cracker welding 躺板極堆銲fire -crair conditioningker welding 躺銲fire welding cable 電 返回 fire welding