英语释义

• a drill bit that has hardened rotating rollers

片语

rock-bit interaction model巖石

rock drilling bit钎头

electric rock drill bit电动鉆巖机鉆头

rock core bit取心鉆头

rock drill bit巖石鉆头

rock roller bit牙轮鉆头

electric railway rock drill bit电动鉆巖机鉆头

rock-bit interaction巖石与鉆头互相作用

英汉例句

• the crack forming and expending organization of rock bit is presented by the themostress analysis of brazing process and experimental design in this paper.

  本文通过对焊接过程热应力的分析并借助试验设计，提出了凿巖钎头裂纹形成和扩展机理。

• the results revealed that the wear process of rock bit bearings and specimens in modelling tests is the effect of simultaneous actions of adhesive wear, fatique wear, oxidation, and abrasive wear.

  结果表明，鉆头磨损和模拟试验磨损是由粘着磨损、疲劳磨损、氧化及磨粒磨损等形成的综合磨损过程。

• because of heavy load and low peed of rotation, it is difficult for rock bit bearings to form a fluid ilm between the sliding surfaces, and, therefore, they may be in boundary lubrication.

  鉆头滑动轴承由于承载高、转速低、难于在滑动而形成连续的润滑膜，从而使轴承处于边界润滑状态，它的主要磨损失效形式为粘着磨损、疲劳磨损和磨粒磨损。

• on the basis of the interaction model between formation and rock bit, a lateral vibration dynamic model of the rock bit was established under the interaction between drilling string and rocks.

  在建立牙轮鉆头与井底巖石互作用模型的基础之上，建立了基于鉆柱和巖石互作用下的牙轮鉆头横向振动动力学模型。

• the structure of tri-cone rock bit is complicated. as the cutting structure touch the stratum directly, it affects the process of breaking rock and the performance of tri-cone rock bit.

  三牙轮鉆头结构复杂，其中齿面结构直接与地层接触，对于巖石破碎过程和鉆头工作性能的影响最大。

• tri-cone rock bit is the important tool in oil drilling, so its capability and quantity affect the speed and cost of oil drilling greatly.

  三牙轮鉆头是石油鉆井的重要工具，其性能和质量对鉆井速度和成本影响很大。

• there are many causes inducing rock bit cone break, in which the effect of its machining on the cone is more serious.

  造成鉆头牙轮破裂的原因是多方面的，其中鉆头机加工对牙轮开裂的影响较大。

• diameter controlling is of great importance in rock bit manufacturing.

  保证三牙轮鉆头的直径是鉆头制造工艺的重点。

• a new type rock bit with bearing liner structure has been developed and tested on the spot.

  研制了一种新型的镶套轴承结构牙轮鉆头，并进行了现场试验。

• with 20 rock bits which used in the field, bearings' surface metallography, rigidity, and the main factors influence the life of the rock bit journal bearings were studied.

  收集了近几年20只现场失效牙轮鉆头，对其轴承表面金相组织和硬度以及影响牙轮鉆头滑动轴承失效的主要因素进行了分析。

• the paper introduced the successful application of high bench caving method of using deep hole roller rock bit into the practice of solving the complex goaf area, a stuff problem of this kind.

  采用深孔牙轮鉆机、利用高台阶崩落法成功地处理了复合采空区，解决了复合采空区处理难的问题，使技术人员在熟练浅采、深采空区处理的情况下，又探索出复合采空区的处理方法。

• the dynamic model reveals the dynamic action of string, it is instructive to design new rock bit and study drilling mechanics.

  通过研究得出了一套研究鉆柱系统动力学模型及求解方法，对新形鉆柱的设计和鉆井力学的研究具有指导意义。