管

The guided work is the key to the ultra-Long jacked pipe project. But the manual surveying method can not satisfied the need of the ultra-long jacked pipe project.

中文摘要超长顶管施工的导向工作是顶管施工中的关键，如今在一般距离顶管施工中采用的人工测量方法完全不能满足超长顶管施工的要求。

The fired heater comprises a radiant section enclosure with a number of U tubes in the radiant section. The U tubes are formed by connecting one or more tubular sections, and the U tubes are provided with internal generally longitudinal fins.

烧制的加热器包括一带有多个在辐射部中的U管的辐射部室。U管通过将一个或多个管状部相连而形成，而且U管设有内部的通常为纵向的翼片。

The results indicate that the difference between the Y-shaped CNT and the pristine one is remarkable due to the influence of the defects in the junctions of the former.

研究结果表明，由于缺陷环的影响，Y型碳纳米管与直型管的性质明显不同，而且，Y型碳纳米管的结构和性质与分支管长度存在一定的关系。

This invention provides a kind of superthin tube heat exchanger. Its feature is that the heat exchanger comprises hollow level header that the refrigerant can flow through, several refrigerant tubes insert in the level header, so it can distribute the refrigerant that flow in the level header.

本发明提供一种超细管道热交换器，其特征在于：上述热交换器由以下部件构成：中空的水平集管，可以使制冷剂流过；若干个垂直制冷剂管群，插在上述水平集管内，可以使在上述水平集管内流动的制冷剂得到分配；隔断，设置在上述水平集管内部的上述垂直制冷剂管之间，能够改变制冷剂的流动方向。

The thyristor and stator winding have different topology architecture when the inductionmotor is controlled by the thyristor. Based on the fault characteristics of the inductionmotor, the current through the thyristor and the stator winding are studied when theshort-circuit or open-phase fault is occurred. The reasonable protection method based onthe different topology architecture is given in the thesis, and the induction motor and theover-current of the thyristor are reliably protected.

在分析异步电动机一般故障特性的基础上，针对采用晶闸管对异步电动机进行节能控制时晶闸管与异步电动机绕组所形成的不同拓扑结构，详细分析了在发生短路、断相等各种故障时晶闸管与异步电动机绕组中通过的电流，为实现晶闸管的过流速断和异步电动机的可靠保护提供合理的保护判据。

Come to think of present conditions , interior independence management system is the first place to choice to share businessmen . But along with the way of supervision strengthening , setup improving and information system riping . Band , as the third side , will be the last place to register and management system reform .

根据目前大环境的要求，券商内部独立存管体制是存管制度发展的主要方向，但随着监管手段的加强、制度的不断完善以及信息系统的成熟，银行第三方存管制度将是存管制度发展的最终目标。

Is a professional production of stainless steel pipe die, high-frequency welded pipe and stainless steel pipe mold machine, polishing machine, the compound of the aircraft and other equipment supporting the production line of stainless steel manufacturers.

佛山市永坚制管模具机械有限公司是一家专业生产不锈钢焊管模具，高频焊管模具及不锈钢制管机、抛光机、复合管机及其它配套设备的不锈钢生产线的厂家。

May carry on each kind of specification according to the customer request the straight seam steel pipe processing manufacture, in the workshop is equipped with two tube making production lines, the main processing equipment has 3200-ton tube making hydraulic presses, 1600 ton tube making hydraulic presses, the completely automatic pre-bender, 2000 ton hydraulic pressure finishing machines, the automatic stitching machine, the large-scale numerical control automatic cutter, the plate ultrasonic testing machine, the automatic submerged arc welding machine, the gas protection automatic welding machine, the hydraulic pressure test and so on the tube making industry most advanced technical equips.

可根据客户要求进行各种规格的直缝钢管加工制作，车间内设有两条制管生产线，主要加工设备有3200吨制管液压机、1600吨制管液压机、全自动预弯机、2000吨液压精整机、自动合缝机、大型数控自动切割机、板材超声波探伤机、自动埋弧焊机、气体保护自动焊机、水压试验等制管业最先进的技术装备。

Carbon nanotubes are coated with Ni by a series of processes of optimization (oxidations, sensitization and activation) used to add activated sites on the surface of CNTs before electroless plating.

通过对镀Ni前碳纳米管的氧化、敏化和活化处理，在碳纳米管表面增加活化点，成功地在破纳米管表面镀上一层金属Ni，并用TEM对镀Ni前后的碳纳米管进行了表征。

The equivalent stress nephograms, the variation rule of pipe displacement and stress on the bellow pipe under expansion were obtained. It was found that the stress and strain of the pipe were symmetrically distributed over the geometric shape of the pipe,the equivalent stresses and equivalent strains at different points of the pipe varied with the curvature radius.

模拟了井眼中波纹管的膨胀变形，得到了波纹管施工加压膨胀和井壁接触过程中的等效应力分布云图、波纹管的位移、应力变化规律，以及波纹管膨胀后和井壁的接触状况。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。