Warning: file_put_contents(): Only 0 of 7570 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 gas and sand anchor是什么意思，gas and sand anchor的翻译，gas and sand anchor音标、读音、用法和例句_开心英文字典_柠咚词
The utility model is suitable for various oil and gas wells and water wells, and can directly do sand anchor operation under pumps. 本实用新型适用于各种油气井和水井，可直接做泵下砂锚。 ip.com