Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/b21fe924e721d8c89d963e36f8691068.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 arc welding英英字典_arc welding剑桥英语解释_arc welding柯林斯英文解释_食材鋪反向词典
1. N a technique in which metal is welded by heat generated by an electric arc struck between two electrodes or between one electrode and the metal workpiece 弧銲