岩石钻

The velocities of ultrasonic wave and rock drillability are measured in perpendicular and parallel directions of the bedding plane of core samples which were cut from the approach hole of Chinese continental scientific drilling. Rock drillability index and P-wave velocity anisotropy coefficient are calculated from the testing data; and the results are discussed.

通过室内实验分别测定了岩芯垂直于和平行于地层层面方向的可钻性及声波速度，得到了岩石可钻性各向异性指数和波速各向异性系数，并对结果进行了讨论。

The mine, established in 1903, is one of 30 or so kimberlite diamond mines in the world, and is believed to be still the world's second-most-valuable diamond resource.

自从1898年汤玛斯库里南爵士在这里发现可能富含钻矿的金伯利岩石以来，小镇就依赖钻石生意生存发展。1903年建成的库里南钻矿是世界上约30个金伯利岩钻矿之一，在世界上最有价值的钻石资源中仍居第二位。

A tool used for drilling.A needle-shaped drill for boring holes in rock or masonry.

钻头，钻石器，钻孔器用于在岩石或砖石上钻孔的针形钻

In this paper, the vibration characters of the Roller Cone Rock Bit which are caused by interaction bit/formation and elastic deformation are analyzed and studied deeply and in detail.

本文对在钻井过程中由于牙轮钻头与岩石互作用及钻柱的弹性变形导致牙轮钻头和钻柱在钻井过程的振动问题进行了深入地分析研究。

With the geometry model of the roller cone rock bit and kinematics model, by setting up rock failure model of bottom rock and interaction model between teeth and rock, the interaction dynamic modeling of Bits and rock is established in the process of petroleum drilling.

本文对在钻井过程中由于牙轮钻头与岩石互作用及钻柱的弹性变形导致牙轮钻头和钻柱在钻井过程的振动问题进行了深入地分析研究。

The use of diesel powered machinery in the water cycle by using a specially designed forming a bit-wide hole, a hole diameter of 120 MM, the largest drilling Depth of up to 60 meters, drilling speed (if the soil is pure, then one day drill 25 meters above the middle aquifer hardness of rock drilling 8 ~ 10 M)!

该机械采用柴油机做动力，在水循环下利用特殊设计的全孔钻头一次成型，成孔直径为120MM，最大钻井深度可达60米，钻井速度快(如果是纯土层，则一天可以钻25米以上，中等硬度含水岩石可钻8~10M)！

It was found out that the automation level of the drill and driver's operation level are also key factors which affect the drilling process.

本文通过对岩石的可钻性和钻进参数进行的分析研究，用已知岩性与未知岩性进行比较，能够得到相对的岩石特性，从而达到识别岩石性质的目的。

The company produces mainly products include: the hydraulic rock and concrete splitting machine, multi-function manual hydraulic excavator, for small and medium size/hydraulic concrete broken clamp on aerodynamic hammer drill rig, steel, and drilling and etc.

公司所生产的主要产品包括：液压式岩石和混凝土分裂机，多功能手工操作液压剪/钳，用于中小型挖掘机上的液压混凝土破碎钳，气动锤钻和钻机及钻钢，等。

Rock drillability index is a very key parameter in selection of drill bit type and determination of productivity in petroleum, mining and geology. Unfortunately, there are many limits in the current definition as well as experimental methods.

岩石可钻性指标是石油、矿山及地质部门广泛用于钻头选择和制定生产定额的重要参数，但现行可钻性指标的定义及参数获取的实验方法还存在许多问题。

Therefore, present evaluation methods of rock drillability can not be applied to predict rock drillability of wildcat well before drilling.

因此，在相似构造选择的基础上，提出了一种对野猫井岩石可钻性进行钻前预测的方法。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。