Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/07db70df3802870c7b4a21804058bcb2.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 drilling and blasting operation是什么意思,drilling and blasting operation的翻译,drilling and blasting operation音标、读音、用法和例句_94生活常识网有道词典
With the technology of directly drilling outside the furnace, the blasting period was shorten and the operation safety was ensured. 採用爐外直接鑽孔技術,縮短了工期,保証了人員安全。