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On the one hand, a particularist view of teaching skills as context-specific responses is liable to give hostages to the fortunes of those who claim that, since the art or craft of teaching rarely if ever involves the application of general rules and principles, it can only be learned via the hands-on school experience which renders college training largely redundant.

一方面,一个particularist鉴于教学技能方面的具体对策,即属给人质的命运,这些谁主张,既然艺术或工艺的教学,如果以往很少涉及的应用一般规则和原则,它只能通过经验教训的手中,对学校的经验,使学院的培训基本上是多余的。

The prepared powders were characterized by XRD, UV-Vis, FTIR, N_2 adsorption, Fluorescence spectroscopy, etc. N-doped TiO_2 evidently shows its absorbance shoulder shift into visible light region. Moreover, N-doping retards the transition of TiO_2 from anatase to rutile type as well as restrains the growth of the crystal size which leads to less decrease of surface area. These characteristics are considered to benefit the photoactivity of TiO_2; When all the samples were applied to the photodecomposition of Methylene Blue under visible light(λ>400 nm), the N-doped TiO_2 show an obvious superiority when compared to the undoped TiO_2, the active hydroxyl groups are found to play a important role in this high photoactivity; When the same experiment was performed under UV light, all the samples show the consistent sequence of photoactivity as in the visible light.

通过UV-Vis、XRD、BET、IR、FL等表征手段测试表明:掺氮不仅使TiO_2的光吸收区域拓展到可见光区,而且有利于延缓TiO_2晶相的转换,从而抑止了高温煅烧下所引起的晶粒增大以及比表面积的降低,且氮源浓度越高,此现象越明显,这些特征都有利于催化剂光催化活性的提高;在主波长大于400nm的可见光催化亚甲基蓝实验当中,掺氮TiO_2的光催化活性明显优越于未掺氮样品,亚甲基蓝在90min内达到88%的脱色率。

For the problem that the suppression of co-channel interference and suppression of noise can't be balanced in signal-to-jamming and noise ratio maximization method for the linear precoding of multiuser multiple-input multiple-output downlink systems, an improved scheme that the term of noise variance is modified as a piecewise linear function is proposed, in which the balance between suppression of co-channel interference and suppression of noise can still be maintained even when the noise variance is a small value through piecewise modifying the term of noise variance, and thus the bit error rate and capacity of the systems are further improved.

针对多用户多输入多输出系统下行链路线性预编码的信干噪比最大化方法中,共信道干扰抑制和噪声抑制不能有效平衡的问题,提出将其中的噪声方差项修正为以噪声方差为变量的分段线性函数的改进方案。该方案通过对噪声方差项的分段修正,在噪声方差的值较小时依然能够保持共信道干扰抑制和噪声抑制间的平衡,从而使系统的误比特率性能和容量得到进一步提高。

Compared with the Epoxy resorcinol-formaldehyde resin pretreatment system and Maleic anhydride pretreatment system developed by Xusigui, the 40% carbolated styrene-butadiene latex system can keep the composite"s properties and reduce the cost of pretreatment and simplify the pretreatment technology; especially to the HST 2073 latex system, the composite"s mechanics properties are improved greatly. Secondly, the composite"s comprehensive properties and interface performance are improved by reinforced with short fiber grafted with rubber in the surface. Thirdly, to simplify the production technology of composite, we add TKM-M and RF-90 as adhesive agent to the composite blended in an internal mixer, so as to the composite can be used to industry widely, then the effect of the amount adhesive agent on the composite"s properties and interface adhesive performance was studied, from the experiments the optimum amount of adhesive agent was deduced.

其中采用特软羧基丁苯胶乳预处理短纤维的方案,降低了预处理成本,相对许泗贵的低分子环氧和马来酸酐体系来说,预处理工艺大大简化了,而材料的力学性能保持良好,尤其是 HST 2073A 胶乳预处理体系,力学性能有较大幅度的提高;第二,通过对尼龙短纤维表面进行接枝橡胶分子链预处理,改善了复合材料的界面粘合性能,复合材料的综合性能也得到了相应的提高;第三,为了简化复合材料的生产工艺,使复合材料的应用得到工业化推广,我们选用TKM—M和RF—90长效增粘剂,直接加入短纤维橡胶复合材料中,采用密炼工艺,探讨了增粘剂的用量对复合材料界面粘合以及性能的影响,得出了增粘剂在复合材料中的最佳用量。

Under the capitalist condition, alienation labor makes the laborer's work alien from his products, his labor activity, his essence, and the relation between different laborers. We can get the goal of developing the useful and discarding the useless of the dissimilatory works through realization of communism only and have to eliminate the capitalist private ownership relation of work.

资本主义条件下的异化劳动使劳动者的劳动和他的劳动产品相异化、和他的劳动活动相异化、和他的类本质相异化、劳动者人与人的关系相异化,对异化的扬弃只有通过共产主义的实现才能完成,扬弃异化劳动必须消灭资本主义私有制。

This article makes construct of pedestrian streets In chongqing has firm theroy basis and frondose、directioning advice,and describe a especial menu of trate pedestrian streets with the traits of chongqing by analysing and studing space and entironment of trade pedestrian streets In chongqing.

本文通过以上三个方面对重庆的商业步行街的空间环境的分析研究,使重庆的商业步行街建设有了坚实的理论基础、具体的指导性的建议,并且在此基础上描绘了一幅具有重庆地方特色的商业步行街的独特画面。

Silica and alumina, to an organic silicone rubber, ShoreA 70, to improve the hardness of silicone rubber material and the results indicated that the addition of silica improved the hardness of the material dramatically, but depressed the heat-resistance markedly; the addition of alumina improved the hardness of the material also, but more loading was needed to achieved the hardness as compared with the silica added materials.

研究发现,添加气相法白碳黑能显著提高硅橡胶的硬度,但使硅橡胶的耐热老化性能明显变差;氧化铝也可以用于提高硅橡胶的硬度,但与气相法白碳黑相比,达到相同硬度时的添加量要大的多;比较而言,通过添加氧化铝获得的高硬度硅橡胶具有较好的综合性能,更能满足电化铝烫印版的制作需要。

Said invented door plank storable and superposable screen window has left and right storage boxes for holding the screen roller made up by rolling up screen, and comprises latch hook, coupling bar, upper and lower guideways, the left and right storage boxes are freely fixed on the upper and lower guideways, according to the requirements the left and right storage boxes can be slided, and can be formed into square frame together with upper and lower guideways, and the screen can be spread and laid on said square frame so as to form the invented door plank storable and superposable screen window.

通过把抑制由纱网卷绕收藏成纱网滚筒的左右的收藏箱及纱网的上下端边固持的纱网往面内外方向弯曲的挂钩装成相对于上、下导轨自由滑动,而且将在左右的收藏箱装成自由滑动的连动杆设置为和该上、下导轨的卡合孔自由卡合,将左右的收藏箱自由固定于上、下导轨,按照需要使左右的收藏箱滑动,和上、下导轨一起形成方形框,而且借着在自收藏于左右的收藏箱内的纱网滚筒拉开纱网下展开、铺设成该方形框,可形成门板状可收叠纱窗。

In this paper, the stress and strain fields of lithosphere in Himalayan Western Syntaxis orogenic belt and its adjacent areas since 10Ma are investigated through using the 3-D finite-element simulation, and deformation and evolution process in former 2Ma are simulated with different rheological parameters and rheological structure. Studies on functions in simulation process of different viscosity parameters, constitutive relation and changes of initial curst thickness show below results:(1) When various viscoelastic models are adopted, the selection of the coefficient of viscosity in the Western Syntaxis area has important influence on the its uplifts and evolutions. The computational results show that the viscosity in the Western Syntaxis area should be smaller than 1023Pa·s;(2) When the elastic model is adopted in relatively rigid Tarim basin, obvious changes are induced to the stress and strain fields of the whole Western Syntaxis area;(3) The existence of mechanical property stable block doesn′t make the propagation of the stress field show obvious decoupling phenomenon.

用数值模拟的方法探讨了自10 Ma以来喜马拉雅弧形造山带的西构造结及邻区岩石圈的形变和位移变化特征,并采用不同的流变参数和流变结构模拟了前2 Ma内的形变和应力场的演化过程,通过对不同黏性系数、本构关系和初始地壳厚度的改变在演化过程中所起的作用研究表明:(1)采用黏弹性模型时,西构造结区黏性参数的选取对西构造结及邻区隆升高度和隆升范围有重要影响,计算结果给出西构造结区地壳黏性系数应小于1023Pa·s;(2)相对刚性的塔里木盆地采用弹性结构时,对整个西构造结区域的应力和应变场均能引致明显变化;(3)力学性质稳定块体的存在并没有使应力场的传播出现明显的解耦现象。

Pass to computer control technology to the application and the research in the shaft hoist, we introduce that the new breeze well hoist computer control system to adopt the most advanced technique of PLC nowadays, by full-digital thyristor DC speed regulated system to constitute of parallel 12 pulse technology and magnetic fields to change toward technology, reform the traditional generator- electric motor machine set and relay control of hoist, by F- D machine set the unadvanced drive of wind reformation to become having the international advanced the horizontal full digital DC to drive the system.

通过对计算机控制技术在矿井提升机中的应用和研究,阐述了新风井提升机计算机控制系统采用了当今最先进的PLC技术、由全数字晶闸管直流驱动系统组成的并联十二脉动整流技术和磁场换向技术,来改造传统的发电机—电动机机组+继电器控制的提升机,从而使落后的F—D机组驱动的提升机改造成为具有国际先进水平的全数字直流驱动系统。

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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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