Under normal circumstances, Drifting in the rock face of the gushing water, in the concentration of multiple drill rock drill before the solids content of at least.
一般情况下，在岩石平巷掘进工作面的涌水中，在多台凿岩机集中打眼之前，固体颗粒含量最少。
The drill is strong enough to bore through solid rock.
这把钻足以钻透坚固的岩石。
Miners watch as the drill machine 'Sissi' breaks through the rock on the final section of the Gotthard Tunnel.
打通山体的工人正在查看钻孔机器“茜茜公主”打穿圣哥达隧道最后一部分的岩石。
Drill past 3, 000 metres of rock and you will hit a layer of salt 2, 140m thick.
钻探头穿过3000米厚的岩层将会触碰到2140米厚的盐层。
Thes detecting structure instrument of the roof rock is integrated in the pneumatic bolt drill and data processing is adopted BP algorithm of mature net to identify the structure.
其中，顶板岩层结构探测仪是集成在风动锚杆钻机上，数据处理采用训练成熟的BP算法神经网络进行结构的识别；
This allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel.
这样允许钻头围绕岩石的中心圆柱体钻进，并通过钻头进入取芯桶。
This drill can bore through the rock.
这台凿岩机钻透了岩石。
With its panoramic camera and microscope its rock drill spectrographs and magnetic dust collector the robot will search for clues about the watery past of that desert world.
利用全景相机、显微镜、钻岩机、光谱摄影机及磁力集尘器，巡回者号将寻找这个荒芜世界过去是否有水存在的线索。
On the basis of theoretical linear model, the paper studies the influence of input flow on operating parameters of shock mechanism for hydraulic rock drill, and a series of brief formulae are derived.
在理想线性模型的基础上，研究了输入流量对液压凿岩机冲击机构工作参数的影响，得到了一组简明公式。
By sampling the drill cuttings and using a microcomputer at the well site, the rock drillability can be determined by the energy law measure system.
能量法岩石可钻性测定系统是通过采集钻井井口岩屑并利用微机来测定岩石的可钻性。
This drill can bore through rock.
这台凿岩机能钻透岩石。
To drill soft, unconsolidated, usually shallow formations by eroding the "rock" below the bit by hydraulic impact loading alone.
钻进松软、非固结，通常是浅地层时，通过仅仅依靠液力冲击载荷去冲蚀破碎钻头下的岩石。
Even pace is a piece of rock, it would burst out sparks, as long as you pick up the hammer drill steel.
即使脚步下是一片岩石，它也会迸发出火花，只要你拿起铁锤钢钎。
This paper introduces the 'structure characteristics and rock fragment characteristics of single step drill head with point pick.
介绍了单阶梯尖环齿钻头的结构特点及碎岩特点。
They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock.
当钻到页岩时，从侧面将高压水、沙子和其它东西注入页岩内。
This drill can bore through rock.
这台钻机能钻透岩石。
The drill bit is a direct tool for rock breakage. The rate of penetration is closely related with the drill bit as well as the mechanical properties of the rocks.
钻头是直接破碎井底岩石的工具，钻井速度的快慢不仅与钻头有关，而且与所钻岩石的力学性质密切相关。
Leading energy loss of the flow valve in hydraulic rock drill was analyzed and its formula was presented.
分析了液压凿岩机配油阀的主要能量损失，给出了其计算表达式。
Numerical method is proposed for general mechanical impact systems by means of characteristic line theory . Simulation results of hydraulic rock drill are provided .
应用特征线方法，提出了一般冲击机械的波动力学数值计算方法，给出了一液压凿岩机械的数值模拟结果。
Drill rig and its accessory tools were developed to meet the technical requirements of drilling Geo physical blast holes in soil and rock among mountainous and hilly area in China.
为满足我国山地丘陵地区物探爆破孔施工技术的要求，研究适合土层、岩层钻进用的钻机及工具，对钻机的配套设备进行了开发研究。
Recently, a common method is fixing direction of drill hole, not considering anisotropy of rock body.
目前，通用的设计方法是不考虑岩体的各向异性而采用固定的钻孔方向。
Since the process of colliding mechanism of electric rock drill is complex, there isn't a set of calculating method practically still now.
电动凿岩机冲击机构因其受力过程比较复杂，至今尚无一套可行的计算方法。
Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
Single pass drilling apparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting.
单通道钻孔装置，整个钻头的使用，用于单通道岩石锚固的方法和岩石锚栓。
According to the drive mechanism and the demand of the hydraulic rock drill, the structure character and the designing ways of the impact device, control valve and supporting arm were introduced.
根据水压凿岩机液压传动原理和使用要求，详细介绍了凿岩机中冲击器、操纵阀和支腿的结构特点和设计方法。
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.
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。
This paper analysed the noise characteristic of pneumatic rock drill stell. Introducing the harness method of pneumatic rock drill stell noise.
对气动凿岩机钎杆产生的噪声特性进行了分析研究，介绍了钎杆噪声的治理方法。
The frame construction, the work flow and the three dimensional modelling method of pneumatic rock drill based on virtual prototype technology were elaborated.
阐述了气动凿岩机虚拟样机设计的框架结构、工作流程和三维模型构建方法，并在此基础上进行了参数化设计与运动仿真的研究。
Therefore this system is a effective means for developing a hydraulic rock drill.
因此该系统是研制液压凿岩机的重要辅助手段。
Therefore this system is a effective means for developing a hydraulic rock drill.
因此该系统是研制液压凿岩机的重要辅助手段。
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