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- In the past more than 10 years,the large diameter longhole mining technology in China has been developed greatly,with a series of grand achievements. 近十多年来，我国大直径深孔采矿技术有了长足的发展，取得了一系列重要成果。
- In the test of the large diameter longhole mining of No.91 orebody at Tongkeng mine,the stress and the displacement of wall rock at the stope drilling chamber were monitored. 在铜坑矿91号矿体大直径深孔采矿法试验过程中，对采场凿岩硐室围岩的应力状态和岩移进行了监测。
- Generally, the precision of longhole drilling now is fairly poor in China, which seriously restricts the development of the large diameter longhole mining technology. 目前,国内深孔凿岩的钻孔精度普遍较低,这一现状严重地制约大直径深孔采矿工艺的进一步发展。
- Application of High Bench Large Diameter Longhole Blasting Technology in Anqing Copper Mine 高阶段大直径深孔爆破技术在安庆铜矿的应用
- he large diameter longhole mining has advantages of high efficiency,low cost and good safety etc. 大直径深孔采矿具有效率高、成本低、安全性好等优点。
- Keywords High level pillar mining;Cemented fill-mass;Large diameter longhole mining method;Heterogenous interface control blast; 高阶段矿柱回采;胶结充填体;大直径深孔采矿法;异质界面控制爆破技术;
- Keywords raise sinking by blasting;large diameter longhole;blasting technology;water stemming;hole measuring by double deck boning rod; 爆破成井;大直径深孔;爆破技术;水封堵塞;双层测杆测孔;
- Approaching a Technical Problem of Home-made Large Diameter Bend. 大口径弯管国产化技术问题探讨。
- Large - diameter longhole miming 大直径深孔采矿法
- Large diameter wafers are feasible and 200-mm wafers have been produced. 大直径片子已不难制造，200mm的片子也已产生了。
- Remove the spring retainer and spring. Note that the large diameter of the spring is down on the guide assembly. 拆卸弹簧固定器和弹簧。注意在引导总成上弹簧的直径有所减少。
- Shandong Province is the largest diameter hose manufacturer. 是山东省最大口径胶管生产厂家。
- Hardfaced seating surfaces, large diameter hinge pins, and corrosion resistant bearing surfaces help lengthen operating life in tough surfaces. 经过硬面处理的阀座表面，大直径铰链销，以及防腐蚀轴承表面，有助于延长坚硬表面的使用寿命。
- The 7 kinds of organic phosphorus pesticides in injecting water sample wits Gas Chromatography equipped with ECD, large diameter capillary columu. 用电子捕获检测器，大孔径毛细管色谱柱直接进水样分析7种有机磷农药。
- Manufacture Large Diameter R.C. Drainage Pipe with Roller Suspension New Process to Save Energy? 节能型悬辊法生产大口径钢筋混凝土排水管?
- Can not pile frames, dual vibratory hammer or hammer in high tonnage joint use of large diameter pile. 还可以不用桩架组合，双锤或多锤在高吨位大直径管桩上联合使用。
- 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。
- The dual large diameter mufflers boost torque and horsepower while producing a throaty, V-twin growl. 大直径的双消音器提高扭矩和马力，同时产生喉音，V型双咆哮。
- Described in the article is the hotgauging of callipers for inspection of large diameter hotrolled steel tubes. 介绍了大直径热轧钢管测径仪的热标定方法。
- It is very difficult to grind tapered bore in a large diameter gear without dedicated equipment. 由于没有专用设备,大直径齿轮锥孔磨削非常困难。
