Warning: file_put_contents(): Only 0 of 5404 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/52065.com/index.php on line 55 welding gutter是什么意思，welding gutter的翻译，welding gutter音标、读音、用法和例句_伍贰汉英词典
This invention changes its 200 years history of limitation to roof gutter and drainpipe, due to its easy bending, cutting and welding property. 改变200年以来利用锌金属易于弯折、剪焊等加工特性而限于作为制造屋面天沟及排水管之用。