钻孔温度特性是影响多年冻结岩石钻进工艺的主要因素之一。
When drilling in frozen rock, the temperature in borehole is one of the main factors influencing drilling technology.
便携式手提电动工具。手柄振动的测量。第3部分：岩石钻头和旋转锤。
Hand-held portable power tools. Measurement of vibrations at the handle. Part 3 : rock drills and rotary hammers.
回转配用泥浆泵进行岩石钻进及第四纪松散地质层的泥浆护壁和深孔钻进。
H. Rotary used in conjunction with slurry pump can be used for the drilling of rock, slurry wall for loosen stratum of the Quaternary period and deep hole drilling in.
你不需要通过固体岩石钻孔隐藏管道和瀑布电力胆量或雇用吊车吊石块到位。
You don't need to bore holes through solid rock to hide the plumbing and electrical guts of a waterfall or hire a crane to hoist boulders into place.
前言：通过对“三软”不稳定煤层采煤工作面瓦斯来源的分析，介绍了采用顶板岩石钻孔抽放解决瓦斯问题的原理和方法。
Based on the analysis of gas source at the working face with "three-soft" unsteady coal seam, the authors introduce the principle and method of gas suction by roof-rock drilling.
前言：在冲击—回转式凿岩机向岩石钻进过程中，旋转中的钻具承受着两种力矩的作用：一是驱动其旋转的动力矩；二是被钻岩石阻止其旋转的阻力矩。
In rock drilling process with percussion-rotary drill rotating drilling tool bears two toques: dynamic torque which drives drilling tool into rock mass, and resistance torque of rock mass.
本文用平面光弹方法，对阶梯金刚石钻头切削刃下岩石的应力进行分析。
Rock cutting by a step ped bit has been studied with experimental stress analysis and is tested under atmospheric pressure.
电镀金刚石钻头的胎体性能对岩石的适应性显著影响钻头的钻进效果。
The performance of electroplated diamond bit is greatly affected by the adaptability of its matrix material performance to the rock drilled.
轮式金刚石钻头是利用切削齿缓慢交替切削运动来破碎岩石的新型钻头。
Diamond cone bit is a new drill bit which make use of cutting cutters interacting with rock slowly and alternately.
轮式金刚石钻头是利用切削齿缓慢交替切削运动来破碎岩石的新型钻头。
Diamond cone bit is a new drill bit which make use of cutting cutters interacting with rock slowly and alternately.
应用推荐