短语词组短语bar r copper 棒铜bar copper copper bar 铜条flat bar copper 扁铜棒round bar copper 圆铜棒wire bar copper 线锭铜;条锭铜bare bar copper 裸铜条rectangular -bar copper 矩形铜条bar copper wire 铜条Conductive bar copper for cathod 阴极导电铜棒 返回 bar copper