UBD with CT can reduce the f ormation and pay zone damage,enhance the penetration rate,improve safe operation with high efficiency and drop drilling costs.是什么意思_UBD with CT can reduce the f ormation and pay zone damage,enhance the penetration rate,improve safe operation with high efficiency and drop drilling costs.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句