Warning: file_put_contents(/home/www/wwwroot/tjuzi.com/cache/34bfa1f7dc11c77f12737ae33f46b1d7.txt): failed to open stream: No space left on device in /home/www/wwwroot/tjuzi.com/index.php on line 55 butt seam weld例句_butt seam weld英汉例句_butt seam weld双解例句_橘子化妆朗文词典
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。