Warning: file_put_contents(): Only 0 of 5401 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/52065.com/index.php on line 55 air-track drill是什么意思，air-track drill的翻译，air-track drill音标、读音、用法和例句_伍贰汉英词典
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。