Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/2d2b699c63b5cc40ee11cbd7fd67911e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 rotary air drill是什么意思，rotary air drill的翻译，rotary air drill音标、读音、用法和例句_沉淀汉英词典
May operate air-track, rotary, down-the-hole or other drilling machines to drill blast holes or may direct drilling of blast holes. 操作空氣運作軌道，鏇轉，曏下鑽孔機或其他鑽探機鑽爆破洞或直接鑽爆破洞。