The paper, first puts forward a rock drill should not be studied as a single object.
在对凿岩系统参数匹配进行研究时，首次从理论上提出了不应将凿岩机单独作为一个研究对象。
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。
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。
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。
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。
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。
A huge drill borrowed from an oil company has joined two others digging through the 630m (2,060ft) of rock separating the miners from the surface.
从一家石油公司借来的巨大钻机加入到另两个钻机之中，为的是把隔开矿工与地面的630米(2,060英尺)岩石挖穿。
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。
The new drill is much more powerful, capable of cutting through up to 30m of rock a day.
新的钻机强大得多，一天能够穿透30米的岩石。如果一切进展顺利，它可能第一个完成援救通道。
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。
Basing upon the kinematic features of a planetary drill the paper deals with its specificity of rock breaking. The process and basic laws of rock breaking are presented.
根据行星钻头的运动特征，本文分析了行星钻头破岩的特点及其工作面的破坏方式，揭示了行星钻头破岩的基本规律。
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。
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。
A drill bit used for obtaining core samples in concrete or rock formations.
钻头被用来在水泥或岩层获取岩芯样品。
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。
The rock stratum drilled by a rotary drill is random distributed and complicated, so it is difficult to define the drilling process.
牙轮钻机钻凿的岩层是随机分布、错综复杂的，因而钻进过程难以定义。
The bane that discussing the soft rock geologic strata closes to drill a hole badly and solve the method and measures, and put forward the actual suggestion within work.
论述了软岩地层封闭不良钻孔的危害及解决方法和措施，并提出了实际工作中的建议。
The invention relates to a handheld electrical tool (1) in particular drill, rock drill or hammer drill.
本发明涉及一种手持式电动工具机（1）尤其是钻机、冲击钻机或者锤钻。
This paper designed a new type of muffler for pneumatic rock drill with the theory of impedance.
利用阻抗消声原理为气动凿岩机设计了一种新型的消声罩。
The paper describes a waterjet-aided drill which, successfully developed by Changsha Institute of Mining Research, is useful in laboratory and capable of drilling holes both in soft and hard rock.
本文介绍了长沙矿山研究院研制成的一种实验室用并适用于钻凿软至硬岩孔的连续水射流钻机及与其相适应的两种新型水力-刮刀钻头。
A finite elenent analysis of telescopic arm of TR1000 rock drill is made by using the finite element software Ansys8.
0有限元分析软件为工具，对TR1000型凿岩机伸缩臂结构进行有限元分析，运用节点自由度耦合技术来模拟各节臂的连接。
A finite elenent analysis of telescopic arm of TR1000 rock drill is made by using the finite element software Ansys8.
0有限元分析软件为工具，对TR1000型凿岩机伸缩臂结构进行有限元分析，运用节点自由度耦合技术来模拟各节臂的连接。
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