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- WISDOM DEEP HOLE DRILLING MACHINE CO., LTD. 慧能深孔机械有限公司。
- Dual action: hammer drilling and hole drilling. 二模式动作:锤钻及单钻孔。
- DEEP HOLE DRILLING TECHNOLOGY LTD. 北京哈镘深孔技术有限公司。
- Blasthole deflection is an severe adverse factor when mining is carried out using large diameter long hole blasting . 在大直径深孔采矿中 ,炮孔偏斜是非常不利的因素。
- Test Research on Parameter Optimization for Long and Medium Hole Drilling and Blasting in Sanxin Co. 三鑫公司中深孔凿岩爆破参数优化与试验研究。
- It takes some question,such as: long hole 、HTHP、solidity delay.Those instance and characteristic require cement slurry kept pumpability in a given time. 井段长、高温高压、延迟固井等情况和特点要求水泥浆在一定时期内保持可泵性。
- How long does it take to drill a hole? 打一口井要多长时间?
- Now this technique is applied in the slim hole drilling in Daqing Oil Field. 目前，此项技术已在大庆油田小井眼钻井中推广应用。
- In level hole drilling,by the using of numerical valule analysis method,the mathematics model of drill hole depth and dip angle relation under someone stratum is set up. 在水平孔钻进中,利用数值分析方法,建立在某种地层下按某种钻具组合和钻进参数钻进时,孔深和倾角关系的数学模型。
- The blasting effect of this project prove that long hole loose millisecond controlled blasting is a new technology extraordinarily suitable for rock excavation,and worth to be widely spread. 该工程的爆破效果有力地证明了深孔松动微差控制爆破技术是非常适合岩石开挖工程的一门新技术,值得推广。
- In this paper, designing and processing technique of a detonating cord of low initial capacity are presented. The detonating cord can satisfy the requirements for long hole blasting in mine. 介绍了一种低起爆能力导爆索的设计、性能及生产工艺。该产品克服了普通导爆索在露天爆破工程中的各种特殊环境和装药条件下的缺陷,能够满足矿山深孔爆破的要求。
- After a long drill he told the squad to fall out. 操练了好半天之后，他让这个班解散了。
- Design of the Vertical Bearings Hole Drill Bed 立式轴承座钻孔组合机床设计
- precision deep hole drill with inside chip removal 内排屑精密深孔钻
- The pape describes the test research on the parameter optimization for long and medium hole drilling and blasting by analogic method and test method in Hubei Sanxin Gold-copper Co.,Ltd. 论述了湖北三鑫金铜股份有限公司通过类比法和试验法对中深孔凿岩爆破参数进行优化的试验与研究。
- Discussion concerning peg hole drill eventually 关于钻孔桩终孔的探讨
- deep hole drill key-way milling machine 深孔钻头槽铣床
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- You can keep my book as long as you like. 我的书你要借多久都随你的便。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
