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Thus, the model and method developed exhibit very good convergence behavior in computation and provide accurate predictions of the mechanical behaviours and displacement distributions in the nanotubes.

与一般的数值方法相比较,本文的方法不需要传统的那种冗长的、反复的迭代,并具有非常好的收敛性,因此为碳纳米管结构力学行为的有效预测提供了保障。

Through repeated experimental investigation, a composite nano-crystalline structured thin film was realized on the sapphire substrate, and the devitrification effect at high temperature has been eliminated.

通过反复的实验研究,在蓝宝石基底上研制出了具有复合相纳米晶结构的薄膜,解决了光学膜在高温下由于结晶而产生失透的问题。

The results of DSC and TG studies showed that the blends maintained the heat stability as that of the matrix. The dispersion of the reinforcing phase in the matrix can be well maintain under the circle heating and cooling heat treatment, which is important for its applications.

DSC和TG的研究结果表明,所获得的共混体系基本上保持了基体本身的热稳定性,同时共混体系的热稳定性还受到嵌段共聚物含量的影响;在反复的升降温过程中,嵌段共聚物在基体中的分散状态得到很好的保持,表现出相当的相结构稳定性,这一性质对于材料在工业上的应用意义重大。

The development of recyclable process for organometallic catalysts by simple phase separation has been reviewed .

以可简单分离回收、可反复使用为目标,详细介绍了相转移催化的变化发展过程。

To obtain; to acquire; to attain; to earn; to gain; to carry off; to possess oneself of ...; to take possession of ...

在巴甫洛夫的实验中,铃声反复与食物相匹配,从而使狗学会对铃声简历条件反射的过程,称为条件作用的获得。

The main reason is that bending-strain induces the microstructure phase-transformation of the pentacene polymorphic film from "thin-film phase" to "triclinic bulk phase",which results in the performance degradation of OTFTs.

其主要原因是,pentacene薄膜在反复的变化弯曲作用后,薄膜内部发生了微观结构的相转变过程,从而导致器件性能的降低。

Condition optimization for its efficient fermentation was also carried out. The reaction and separation system with the addition of resin HD-8 and the isoeugenol/aquoeus biphasic system of the biotransformation of isoeugenol to vanillin by Bacillus fusiformis CGMCC1347 were set up. The isolation and purification of isoeugenol and vanillin in both systems were studied. The reuse of the immobilized cells in biphasic system was successfully applied.

SW-B9的基础上,对该菌株进行了生理生化特性鉴定以及16S rDNA序列分析,命名为纺锤芽孢杆菌CGMCC1347;继而对该菌株的发酵条件进行了研究,首次建立了纺锤芽孢杆菌CGMCC1347转化异丁香酚生成香草醛的树脂分离耦合体系和异丁香酚—水两相体系,同时对此二体系的底物和产物的分离提取进行了研究,成功实现了两相体系中固定化细胞的反复利用。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明,(1)在涡轮达到工作转速时,在分级区域形成了一个与涡轮旋转方向相反的局部回流涡,它使得分离出来的细粒重又被带回分级轮外边缘,从而严重影响分级机的分级效率;(2)粉尘粒子在涡轮低速运动情况下,基本上能跟随气体运动,但随着转速加大,两相之间出现了明显的速度滑移现象;(3)分级机工作时的风量也是一个比较重要的操作参数,它可以直接影响到分级机内腔流场的稳定性,风量越大,流场越稳定;(4)同直叶片形状相比较,带后弯导板的叶片,有利于改善流场的稳定性,流场容易形成整体流,对提高分级效率和分级精度都非常有利;(5)粒子轨迹线在涡轮转速较高时十分复杂,有的出现了反复的弹跳现象,大颗粒不能通过分级区域而从进口返流了,只有细小的颗粒才从出口处流出;(6)涡轮转速加大时,粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象,颗粒越小,脉动程度越为剧烈。

In this thesis, the author utilizes her own professional knowledge to repeatedly study the music of Queen of the Night's aria," O zittre nicht " and Pamina's aria, Aoh, ichfhul's esist Verschwundun ,in the opera and to repeatedly listen to the opera by the famous singers at home and abroad .

笔者通过运用自己的专业知识对歌剧《魔笛》中的夜后咏叹调《你别发抖》和帕米娜咏叹调《我感到》曲谱的反复研读,以及对国内外著名演唱家演唱该曲目的声相资料的反复聆听,从中得出了自己的感悟。

A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在气液两相流作用条件下,通过室内自制装置,对管材钢J55做了系列冲刷-腐蚀试验,结果表明,气液两相流对钢管内表面冲刷-腐蚀的机理是钢管内表面会受到液体介质的快速腐蚀,生成腐蚀产物,同时钢管金属表面不断被具有高流速的气液相交替地冲击,不断地从金属表面脱去保护膜或腐蚀产物,裸露的钢表面又会被介质快速腐蚀形成腐蚀膜后,再被两相流冲掉,如此反复,造成管内金属表面膜的连续破坏,使腐蚀加剧,最终导致钢铁表面的冲刷腐蚀失效。

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在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

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