欠平衡
- n.underbalance
- 网络underbalanced
 欠平衡
欠平衡欠平衡
underbalance
石油专业英语_放弃飞翔_百度空间 ... underreamers 套管下扩眼器 underbalance 欠平衡, 不完全补偿 unscrew 卸扣 ... 
                underbalanced
钻井泥浆英语词汇 -... ... overbalanced 过平衡 underbalanced 欠平衡 back pressure 回压 ... 
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        Breakthrough in Application of Underbalance Drilling and Completion Technology for Natural Gas Exploration in Sichuan Basin
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