symmetry welding对称: symmetry; symmetrical焊接: weld; welding; soldering; se ...对称焊: balanced welding/ balanced welding sequence对称焊法: symmetric welding method对称焊缝: symmetrical weld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:对称焊接,即可在微信中查询翻译