有管的

Owing to its effect of the surface and intrinsic lacuna, carbon nanotubes have perfect reactive ability than other allotrope of graphite.

碳纳米管的表面效应和管壁中存在有大量的拓朴学缺陷，使碳纳米管的表面本质上比其它的石墨变体有更大的反应活性。

The elastic stress diagram design method is behind the times and cant meet the command in practice.In the paper the author collected and analyzed a large amount of data about the SLRCP on several typical domestic model experiments and the projects in practice. By summarizing and analyzing the data, the author set up a typical computing model and analyzed the model by the software ANSYS, by reading the output data of the stress and the crack from the program, combined with the experimental results, the author summarized the destroy procession of the stock. The paper also discussed the influence of other main factors to the crack and the stress besides the internal water pressure, such as the concrete material, the dimension of stock and the way of laid-out steel bars.

本文通过对大量实际工程中的坝后背管资料的收集、归纳和分析，选取了具有代表性的计算模型；用有限元软件ANSYS计算了典型坝后背管结构在实际内水压力作用下的应力分布和裂缝发展情况；以国内几个有代表性的模型试验和有限元计算的成果为依据，分析了在内水压力作用下钢衬钢筋混凝土压力管道管壁裂缝的特点，并尝试总结出此种管道的裂缝出现的原因及其发展规律，同时确定了坝后背管结构极限状态的新的定义方式——以坝后背管的裂缝宽度来定义。

ABSTRACT Objective To discuss the importance of the study of conformation and variation of extrahepatic bile duct before gallbladder operationMethods The images of 100 cases having normal structure of gallbladder and extrahepatic bile duct were studied;the conformations and confluence sites were analyzedResults Among the 100 cases,97 cases had clear images of extrahepatic bile duct (97%),3 cases with large amount of air bulbs in bile duct because of the laxation of the lower common bile duct still had clear images of the general conformation of extrahepatic bile duct,87 cases had clear images of gallbladder and cystic duct (87%),13 cases (13%) had partial images of gallbladder or cystic ductConclusions ERCP can clearly show out the conformation and variation of extrahepatic bile duct and cystic duct and it is of important value before gallbladder operation

目的 通过对100例胆囊及肝外胆管正常结构尚存在的患者ERCP图像资料进行归纳和分析，探讨胆囊手术术前了解肝外胆道系统形态及变异的重要性。方法选出100例胆囊及肝外胆管正常结构尚存在的患者图像，对其形态、汇合位置进行分析。结果 100例患者图像中肝外胆管显示清晰者97例(97%)，3例因胆总管下端开口松弛导致大量气泡进入胆道，但肝外胆管大体形态显示尚清晰，胆囊及胆囊管显示清晰者87例(87%)，13例(13%)仅部分显示胆囊或胆囊管。结论 ERCP可以清晰显示肝外胆管及胆囊管的形态及变异情况，对于胆囊手术术前了解肝外胆道系统形态及变异有重要价值。 ERCP；胆囊管；肝外胆管

In order to settle the problem of adjusting the surface level of liquid in U type pipe, the author improves the liquid piezometer. The scoop type pipe is used instead of the U type pipe, and is fixed on a board with scale. And the detection head is fixed on the rail which can slide up and down.

为了解决液体压强计中U型管液面难以调平的问题，对该装置进行了改进，将U型管改为勺型管，并固定在有刻度的展示板上，同时将探头固定在可上下滑动的横杆上，使其可以沿着有刻度的金属杆移动。

The driver consists of magnetostrictive rod, front magnetic pole end cap, back magnetic pole end cap, exciting winding, micro displacement output head, casing, fixed end cap, front end cap, spring, winding tap, flat spiral pipe, water inlet pipe and water outlet pipe. The water cooler of the present invention is formed through inserting one end of some metal pipe into positioning hole of spindle, installing rolling tool onto tool carrier, adjusting the lathe to the pitch of the flat spiral pipe and starting the lathe to complete the extruding formation of the flat spiral pipe.

本发明的驱动器包括有磁致伸缩棒(7)，前磁极端盖(3)，后磁极端盖(10)，励磁线圈(5)，微位移输出头(1)，壳体(12)，固定端盖(9)、前端盖(2)，弹簧(13)，及线圈抽头(11)，螺旋扁管(6)，入水管(8)和出水管(4)；本发明的水冷装置的成型方法为把金属圆管的一端插入芯轴(18)的定位孔(23)中，将滚压工具(20)安装在刀架上，调整车床的加工螺距与螺旋扁管(6)的螺距相等，启动车床，完成整个螺旋扁管的挤压成型。

Data was analyzed via Pearson product moment correlation, Canonical correlation, and multiple step wise regression analysis. The study found that there were significant correlations between service quality and customer satisfaction; service quality and service value; as well as, service quality and behavior intention of nighttime squid fishing. It was also found that service quality, service value and customer satisfaction have positive impact on behavior intention.

研究结果发现：夜钓小管活动所提供的服务品质与满意有显著的相关存在；服务品质与服务价值有显著的相关存在；服务品质与为意向间有显著的影响，最后，夜钓小管活动与者的服务品质、满意与服务价值对为意向有正向的影响。

Based on thermodynamics and thermo-acoustics, the effect of the pulse tube structure was analyzed. It was found that the cross sectional area of the pulse tube influence greatly the working fluid pressure and temperature distributions.

结合热力学和热声学两方面的理论，对脉管制冷机中脉管的结构进行了分析，发现脉管的截面积与其内工质压力、温度分布匹配与否，对脉管制冷机的性能有很大影响。

Experiment result indicates that the RFHP has greater thermal diffusivity, and can reduce junction-to-case thermal resistance of the module. When power density is 176W/cm^2, the temperature difference on the condensation section is within 3℃. The longer time period for the chip to reach the same temperature during RFHP module start-up can avoid power uprush and raise the ability of resisting thermal impact.

结果表明：与铜基板相比，径向平板热管具有更高的热扩散能力，可降低模块的结壳热阻；热管冷凝面具有良好的等温性，当芯片功率密度为176W/平方公分时，热管冷凝面的温差在3℃以内；热管模块启动过程中芯片达到相同温度需要的时间长，有利于克服功率"飙升"和提高功率器件抗热冲击的性能。

There are many merits of autofrettage of the composite material barrel with metal inner. One of them is that it can increase the elastic-plastic strength limits and possesses higher anti-plastic failure properties than pure metal barrels.

对带金属内衬的复合材料身管，自紧有许多优点，一方面可以提高身管的弹塑性强度极限，且经处理后的复合材料身管比纯金属身管具有更高的抗塑性破坏能力。

Rubber trees initiate laticifer differentiation in June and July while no laticifer differentiation occur during the periods from November to May under natural conditions on Hainan Island. Application of jasmonates induced laticifer formation in both immature and mature rubber trees. Tapping and/or pre-tapping enhanced the ability of vascular cambia to differentiate the secondary laticifers.

结果表明，在海南岛自然条件下，乳管分化开始于6~7月份，在11月～翌年的5月没有乳管分化；割胶包括正式割胶前的预割能显著提高橡胶树形成层分化乳管的能力，其影响的范围相当大；外施茉莉酸对未开割树和割胶树的乳管分化都有促进作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。