| 释义 |
Gas drill
基本例句
瓦斯钻机
The field test indicates that characterized by flexible switching and reliable sealing,the new drilling valve can improve the efficiency of connecting individual pipe whilegas drill…现场试验表明,钻井阀开关灵活,密封可靠,提高了气体钻井时接单根的效率和作业的安全性,测斜时不碰、挂测斜仪。 |