mechanized derrick rig是什么意思，mechanized derrick rig的翻译，mechanized derrick rig音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 6036 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55
mechanized derrick rig是什么意思，mechanized derrick rig的翻译，mechanized derrick rig音标、读音、用法和例句_沉淀汉英词典