查询词典 casing spear

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 results show that the casing external collapse load could be lowered to some extent by increasing the cement sheath elastic modulus. But the effect of increasing elastic modulus is much less than that of decreasing the elastic modulus of cement sheath.

研究结果表明，增加水泥环弹性模量对套管外挤载荷有一定的减缓作用，但效果远没有降低水泥环弹性模量明显。

In chapter six, the author describes the stress experiment of a casing end with the three dimensional stress freezing photoelastic method.

第六章采用三维光弹性应力冻结法对套管头进行了实验应力分析。

Because of the special aluminum alloy casing design, NPS1735 can resist corrosion from most acids and alkaline working environments. In addition, the easy cleaning attribute makes it the first choice for strict hygiene workplaces such as hospital, marine industry, abattoirs and other food processing plants.

在外壳设计方面，其特殊的铝合金外壳设计，确保 NPS系列能抗酸碱腐蚀，让系列产品适用于对卫生质量有严格要求的工作环境像是医院，航运业，屠宰场和其它食品加工厂。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。