Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/96f1fda66ffc3791399fc3327cb9b4c5.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 butt seam weld例句_butt seam weld英汉例句_butt seam weld双解例句_欧米惠必应词典
According to the different product structure, butt fusion welding process and lap seam welding process are used to respectively weld left and right half shell of upper body. 上体左、右半壳直焊缝视产品结构不同，分别采用对接熔化焊和搭接缝焊工艺。