double joint双: two; twin; both; dual焊缝: soldering seam; weld bead; w ...连接: connect; fit together; link; ...单焊缝连接: single joint焊缝连接: welding connection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:双焊缝连接，即可在微信中查询翻译
