管

The particular preparation procedure is as follows: preparing a carbon nanotube with carboxyl by acidulating the carbon nanotube; Preparing the carboxylic carbon nanotube/nylon 66 composite material by polymerizing the carboxylic carbon nanotube and the raw material (such as polybasic acid and polybasic amine) which is used for preparing the nylon 66 through in situ polymerization.

具体步骤为：通过对碳纳米管进行酸化，制备携带羧基的碳纳米管。通过原位聚合法将羧基化碳纳米管与制备尼龙66的原料进行聚合，制备羧基化碳纳米管/尼龙66复合材料。

They exhibit bending deformation following the direction of the nanotube curvature. At room temperature, a nanoparticle smaller than Au 70 often escapes from the carbon nanotube surface and can be captured again by the nanotube or coalesces with other nanoparticles to form a larger nanoparticle.

纳米颗粒在碳纳米管上形成以后，小于Au 70的纳米颗粒有可能脱离碳纳米管运动，它们在脱离后可能再度被碳纳米管俘获或者跟其他纳米颗粒结合并被重新吸附到碳纳米管上来。

RESULTS: After root canal preparation, the mean value of the angles of canal curvature decreased from 36.21° to 21.98°, while the mean value of the radius of the canal curvature increased from 6.25mm to 11.35mm; the canal axes transported and intercrossed with the original axes at 2 points and created 3 intersection zones.

结果：根管预备完毕，根管弯曲角度均值从预备前的36.21°逐渐减小至21.98°，弯曲半径均值从6.28mm增大至11.35mm；根管长轴发生了偏移，与预备前原根管长轴形成2个交点，3个相交区。

Ss group was by prepared by k-files with step-back technique. all canals were obturated using lateral condensation technique.

将245颗具弯曲根管需行根管治疗的磨牙随机分为两组，he组用hero642镍钛锉及冠根向深入法预备根管，ss组用k锉及逐步后退技术预备根管。

The incidence of large quantity of overfilling was 23.08% in group 1 and 11.58% in group 2, and the difference was statistically significant.

牙齿工作长度的精确测量是根管治疗术成功的重要环节，没有准确的根管工作长度就无法保证根管充填中严密的根管封闭，而根管治疗术的成功与否，直接影响到患牙能否保存及功能恢复状况。

The friction factor of glass reinforced plastic mortar pipe and typical soil of Shanghai, the develop characters of friction and the effect of injecting slurry on the frictional characters are got through the experiments. The result shows: the ektexine of glass reinforced plastic mortar pipe is slipperier than concrete pipe; injecting slurry could minish the friction between soil and pipe, but the effect of minishing friction is bear

然后通过对玻璃钢夹砂顶管进行摩阻力特性整管试验与直剪试验研究，得到了玻璃钢夹砂顶管外壁、混凝土与上海地区典型土层间的摩擦系数，以及玻璃钢夹砂顶管外壁摩阻力的发展特性，并且分析了注浆

The PVA could help CNTs weltering the aquatic phase and enhance the stability of their dispersion. The PVA had bifunctional bridges, with hydrophilic groups jointed with the Fe2O3 film, and hydrophobic chains adhered to the surface of the carbon nanotubes, so the Fe2O3 were supported on the surface of the carbon nanotubes through the surfactant.

聚乙烯醇均匀吸附在碳纳米管表面，增强碳纳米管在水溶液中的分散，其疏水基团与碳纳米管以范德华力结合，其亲水基团与Fe2O3·nH2O结合，对碳纳米管有效负载Fe2O3起到了桥梁作用。

These specific absorption bands are in relation to the special energy levels.

人们经过十多年的时间，对钛酸盐纳米管的组成、形成机理和物理化学性能进行了大量的研究，但是到目前为止，研究者对其形成机理、可见光吸收等特殊光电性质的来源、结构稳定性等方面的认识尚不清楚，因此本论文对这些方面开展了如下研究：在第二章中我们从热力学的角度系统地研究了煅烧温度对钛酸盐纳米管形貌、结构稳定性和光学性能的影响，发现钛酸钠纳米管是热力学稳定的，而钛酸纳米管是热力学不稳定的。

The inside surface difference between flank-extrados and flank-intrados of any section of loop shell should induce the force difference when the loop shell under internal pressure. The force difference in ring shell can balance itself.

对于内压作用下的任何弯管，因为弯管中线上径向向外的管壁表面积均要比中线上径向向内的管壁表面积大，两者面积之差在同一内压作用下产生面积压力差。

On the basis of research of Bend Pipe machine's principle and Numericl Control system, by a...

通过对弯管工艺的分析，本文在研究弯管机工作原理和控制系统的基础上，以面向对象编程技术为手段，设计和开发出了基于工业PC和WINDOWS 98的双模数控弯管机数控系统，通过调试已成功应用于STAR-03W数控弯管机上：同时，也对在WINDOWS 98平台下开发数控系统所存在的实时性问题提出了解决方法。

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。