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- blast hole testing drill 牙轮钻头试验钻机
- At the Garson Mine in the Sudbury basin, an instrumented test opening has been mined under a paste backfil1ed blast hole stope. 而在萨德伯里盆地的加森矿，已在采用深孔崩矿的膏体充填体下进行试采。
- The form and devel-opment of the blast hole cracking is t he main reason which leads to the effe ctive crush. 不同炮孔周围裂纹的适量产生与发展,是引起岩石有效破碎的真正原因。
- Blact hole cxplesion in a confed condition within tunneling is analysized,a stage-by-stage blast hole design theory and the related paraameters are presentes. 对掘进中处于夹制情况下的炮孔爆破进行分析，提出炮眼分阶段设计的原理及有关的参数。
- Many pressure dominated testing valve is through pumping of relieving annulus pressure to realize open or shut down hole test valve and keep annulus pressure for certain all the time. 许多种压控测试阀均是通过环空加泵压打开,泄掉泵压关闭,开井过程中环空始终保持一定的开启压力。
- The dynamic pressure of drill bit,etc. ,has been measured and analysed in test drill rig by using pressure transducer dynamic strain analyzer,charge amplifier and CRAS random signal and vibration analysis system. 本文在试验台架上安装压力传感器、利用动态应变仪、电荷放大器以及 CRAS随机信号和振动分析系统进行了钻头动态压力测试和分析。
- Put out of hole test string. 取出测试管串。
- Research on and Development in the Geo-physical Blast Hole Drill and Its Accessory Tools in Mountainous and Hilly Area 山地丘陵地区物探爆破孔钻机及配套机具的研究与开发
- The study has sho wn that the deeper the blast holes, the longer the initiation delay time. 应用模型对掏槽微差起爆时间进行的优化研究表明,掏槽微差起爆时间与孔深成正比。
- No. 7--12 pumping water test drill 7-12抽水试验钻孔
- Blasters in this unit group fill blast holes with explosives and detonate explosives to dislodge coal, ore and rock or to demolish structures. 爆破员用炸药填补爆破洞，然后引爆炸药提炼出煤炭，矿石和岩石或粉碎建筑物。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- The stemming length of blasting hole is an important bla sting parameter,directly related to the blasting results. 在爆破中,炮孔堵塞长度是一个重要的爆破参数,它直接关系到爆破效果。
- Brief Analysis for Bore Hole Test with Large Radius 大井径裸眼测试简析
- By improving parameters of the blasting hole,the charge,charging structure and the priming order etc,the smooth blasting is formed. 通过改进爆破的孔网参数、装药量与装药结构、起爆顺序等,从而形成了光面爆破。
- The using of metal magnetic memory technique in testing drill rod 金属磁记忆技术在石油钻具检测中的应用
- Drilling is cutting a hole with a drill. 钻削就是用钻头钻一个孔。
- Nautilus has spent about $12m in the past year on exploration, and Dr Scott says one test drilling found deposits 19 metres deep. 鹦鹉螺公司在过去的一年中花费了1200万美元在勘测上，斯科特博士说，有一次钻探发现了19米深的矿物层。
- The accordion was in full blast in the hall. 在大厅里手风琴拉得非常响亮。
- It is the reason why the wildcatter, the independent oilman whose test drillings might come up dry 20 times before gushing in the end, is an enduring Texas symbol. 这就是为什么那些在投机商，那些个体石油商在石油喷发前可能要试钻探多达二十次的原因，这也是德州一直以来的标志。
