balanced welding/ balanced welding sequence对称: symmetry; symmetrical焊: weld; solder对称焊法: symmetric welding method对称焊缝: symmetrical weld对称焊脚: equal leg下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:对称焊,即可在微信中查询翻译