查询词典 casing

The company has introduced international advanced level of the drainage pipe casing pipe fittings and electrical production, testing equipment and technology.

公司引进具有国际领先水平的给、排水管材管件及电工套管生产、检测设备和技术。

ABSTRACT Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultrad...

在深井、超深井、大斜度井、大位移井及水平井中，钻井时间延长、钻柱作用在套管上的侧向力增高，因此套管和钻柱的摩擦与磨损问题越来越突出。

During deep ＆ ultra-deep well exploration process, with.drilling time being longer, the bigger inside force of drill pipe to case, the casing wear problem becomes more serious.

在深井超深井勘探过程中，由于径向力、涡动、横向振动等因素的存在，随着钻井时间的增长，钻柱作用于套管内壁的侧向力增大，导致套管磨损的问题越来越严重。

This paper introduced a new type DTH hammer drilling with eccentric simultaneous casing about the structure composition and the design idea.

中文摘要：介绍了新型偏心跟管钻具的结构组成以及设计思路。

The paper introduced the structure and principle of DTH hammer drilling with concentric simultaneous casing,which used in seismic exploration drill in gravel.

介绍了适合卵砾石地层地震勘探孔施工用的潜孔锤同心跟管钻具的结构和工作原理。5 simultaneous casing

E. downing the hole hammer with ream drilling and casing synchronously and clan ing the slant borehole with reverible air to blow connector as withdrawing bit.

介绍用空气潜孔锤与同步跟下套管相结合的潜孔锤跟管钻进方法，以及在有残积岩屑的斜孔中应用提钻反吹接头清孔的方法。

Especially in the mobile phone and computer peripheral industry, the Company independent research and development of mobile phone keypad testing machine Life expectancy, Life expectancy clamshell mobile phone tester, testing machine Life expectancy slider cell phone, cell phone drop test machine, testing machine to reverse the cell phone, mobile phone casing friction tester, RCA tapes wear resistance test machine, portable electronic products dedicated drop test machine, fully automatic torque tester Life expectancy, Life expectancy axis test machine, load displacement curve of test machine, the mouse wheel life testing machine, plug test machine, fully automatic servo system Plug test machine, laptop pressure testing machine, LCD pressure testing machine, universal testing machine, material testing machine servo system has been the major manufacturers, such as widespread adoption of the company's products in full compliance with the EN, DIN, BS, ASSTM, JIS, GB, ISO ...

特别是在手机及电脑周边行业，本公司自主研发的手机按键寿命试验机，手机翻盖寿命试验机，手机滑盖寿命试验机，手机跌落试验机，手机扭转试验机，手机外壳摩擦试验机，RCA纸带耐磨试验机，便携电子产品专用跌落试验机，全自动扭力寿命试验机，转轴寿命试验机，荷重位移曲线试验机，鼠标滚轮寿命试验机，插拔力试验机，伺服系统全自动插拔力试验机，笔记本电脑耐压试验机，LCD耐压试验机，万能材料试验机，伺服系统材料试验机等被各大制造厂商广泛采用本公司产品完全符合EN、DIN、BS、ASSTM、JIS、GB、ISO…等标准。

In high Li Gong Shan the summit mountain peak of the 3300 metres of mountain range of stage casing, have a huge big reason karst lose into wear hole, deeply 100 hole metre and hole wide contract 40 remain metre and 60 high contract metres, on anger river north, in 100 besides, can see this one thorough the stone hole of white cloud blue sky, it has a pleasing to the ear name , is called stone moon.

在高黎贡山山脉中段3300米的峰巅，有一巨大的大理岩溶蚀而成的穿洞，洞深百米，洞宽约40余米，高约60米，沿着怒江北上，百里之外，就可看到这个透着白云蓝天的石洞，它有一个好听的名字，叫做石月亮。

The basic parameters of cement are elastic modulus, poisson's ratio and the thickness of cement;they do have impact on the coefficient of pressure transmission of surrounding rock and the coefficient of inflation pressure transmission of casing

水泥环的基本参数弹性模量、泊松比和厚度对围压压力传递系数和套管压力传递系数都有影响

By the elastic mechanics mathematical method and finite element analysis, the effect of cement sheath elastic modulus on casing external collapse load was researched on the conditions of uniform and non-uniform in-situ stress.

利用弹性力学解析及有限元方法，分别研究了均匀地应力和非均匀地应力条件下水泥环弹性模量对套管外挤载荷的影响规律。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。