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n.欠平衡
1、decigram balance───分母天平
2、balance payment───尾款
3、unstrung balance───不平衡
4、under───prep.在……下面；在……表面下；在……的后面；（职务、级别）低于；少于；比……年轻；由……控制；根据；在……过程中；受……影响；承受着；以（某一名字）；在……项下；在 (Xi Tong)下；在……期间；在……生存条件下；栽有；在……掌权期间；在……手下工作；adj.较低的；下面的；adv.在下面；在水下；少于；较年轻；在昏迷中；
5、balance───vt.使平衡；结算；使相称；n.(Balance)人名；(西)巴兰塞；n.平衡；余额；匀称；vi.保持平衡；相称；抵销
6、indelicate balance───不雅的平衡
7、centigram balance───厘米天平
8、compensating balance───[金融]补偿性余额；补偿性存款额
9、your balance───你的余额
1、The applications of under balance directional well in the Well Feng───欠平衡定向井在风城区块的应用
2、Air drilling, as a member of under balance pressure drilling family, is different from conventional drilling methods.───气体钻井是一种与传统钻井方式相比有着很大区别的欠平衡钻井。
3、function of RTTS packer with hydraulic anchor is applied in shallow or under balance pressure extensively.───RTTS封隔器因水力锚自身特有的防窜功能，在浅井测试及负压测试中具有广泛的应用。
4、New technology to drill horizontal wells with under-balance pressure by air injection───注气欠平衡钻水平井的新技术
5、Under Balance Testing Technology in High Pressure Wells───高压井负压测试工艺
6、Using under balance pressure drilling technique aims at preventing the mud loss and pollution of Palaeozoic limestone reservoir in this area and therefore protecting oil reservoir.───井四开钻探过程中成功地采用欠平衡钻井技术钻穿寒武系凤阳山组，以防止该区古生界灰岩储层发生井漏及储层污染，从而保护油层。
7、Use of foam fluid for under balance drilling is a...───利用泡沫流体进行欠平衡钻井，是一种较安全的钻井技术。