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This paper stressed on the fact that electric displacement vector is a supplementary physical element,focused on a difference between D and D surface integral and on the condition of D=ε_0E_0 existence,and made a comprehensive and correct understanding for beginner.

着重说明了电位移矢量D是一个辅助物理量,强调指出D与D的面积分的意义不同,以及D=ε0E0成立的条件,从而使初学者对D建立起一个全面和正确的认识。

In a this tube pair of deflection plate, besides demonstration electron under electric field role deflection movement, but also played causes the beam convergence the function, if causes two deflection plates the electric potentials to be lower than the acceleration extremely electric potential approximately 30 volts, then the focusing condition is best.

该管内的一对偏转板,除了演示电子在电场作用下的偏转运动外,还起了使电子束会聚的作用,如使两偏转板的电位低于加速极电势约30伏,则聚焦状态最佳。

Cool down creatures from outer space cure any disease cut across cut away cut down cut off cut out cut up cut up dead bodies defend …against defend against develop his live for the theatre develop one's love for… develop---developing/developed---development dream of dream of doing sth dress sb in…. dressed in dressed in diving suits eight feet in height/length/width electric/electrical/electronicadj.

与电有关的/电子的用电的与电有关的电子的开始进行智慧的探索即使,即使,尽管死火山找到使我们永远年轻的方法发现自己来到了怪物的表面上发现他们被…包围了发现他们被包围了防火板,防火板,防火强前总统从什么时候起从那天起,从那天开始,从那天起,从那天开始 from now on 从现在开从那时开始始 from then on,从那时开始从那时起流览…;给人提供一个…。

Electrify:To produce electric charge on or in.

使带电:使带电或起电。

The pacing of pacemaker can change the normal exciting sequence of heart and can lead to interatrial,interventricular,and atrioventricular asynchronism,thus result in adverse hemodynamic effect and consequent atrial mechanichal and electrical reconstitution.This is the main mechanism of developing atrial fibrillation.

心脏起搏改变了正常心脏激动顺序,使双房间、双室间及房室间激动不同步,带来不利的血流动力学效应,导致心房机械重构和电重构,这是房颤发生的主要机制。

Cation group has the capability of charge neutrality and this would make oily wastewater demulsify and remove oil easily. Hydrophobic group would improve hydrophobic-oleophilic nature of the oil granule. Simultaneously, wetting reversed agent would change wetting performance of oil granule, enhance conglutination capability between air bubble and oil granule. And Frother would form bigger foam layer on the water, so it could prevnt granule with air bubble from rolling downward.Using the hydrophobic polymeric flocculant as one of ingredients for flotation agent formula, the flotation agent has good treatment effect.

浮选剂配方中的疏水性高分子絮凝剂分子链上带有的阳离子基团起到电中和作用,使含油污水易于破乳除油,而疏水基团能增强颗粒的疏水性能;润湿反转剂能改变颗粒的润湿性,增强气泡与颗粒的粘附能力;起泡剂在水面能形成强度较大的泡沫层,起阻止带气絮粒向下翻动的作用。

The nanocrystalline film was composed of a three-diminsional network of interconnected particles.Reodx behavior and electrocatalytic activities of the Ti/nano-TiO2 electrode were investigated by cyclic voltammetry from oxalic acid and nitrobenzene to glyoxalic acid and p-aminionphenol. The Ti/Ti redox system,as a medium,shows highly electrocatalytic activities and stable characteristic to indirect electroreduction of organic compounds(e.g.:oxalic acid and nitrobenzene).

循环伏安法研究了纳米TiO2膜电极对草酸还原为乙醛酸、硝基苯还原为对氨基苯酚反应的电催化活性,结果发现纳米膜中的Ti/Ti氧化还原电对起一种中介作用,可使有机物如草酸和硝基苯间接电还原,且电极催化活性高,性能稳定。

The light-off character test of prototype is done on engine bench, in this test, the reaction choice of electric heating catalyst is found and the drop of light-off temperature is higher than the max raising temperature of exhaust gas that is from the power of electric heating.

对研制出的车载电加热净化装置在发动机台架上进行了催化剂起燃温度测试,发现电加热净化具有明显反应选择性,而且,起燃温度降低的幅度大于电加热能量使气体温升的最大值。

Normal Open Type A unique application of the direct-acting valve structure, when power to the electromagnetic coil when the head is located in the coil around the core component may generate a static magnetic, gravity and Balance valves magnetic components to overcome the stem return spring will be moving core, together with the elastic Stem components suck up with effect, so that even in the solid components of the valve stem disc closely aligns closely with the valve seat and seal, the valve closed; power, the valve plate in the return spring and the stem components of gravity under restoration in situ, the valve opening, pipeline back to normal ventilation.

常开型 阀门应用独特的直动式结构,当给电磁头的线圈通电时,位于线圈周围的静铁芯组件便产生磁性,磁力克服阀杆组件重力和回位弹簧弹力后将动铁芯连同阀杆组件向上吸起,从而使固连在阀杆组件上的阀盘与阀座紧密贴紧而密封,阀门关闭;断电后,阀盘在回位弹簧及阀杆组件重力作用下恢复原位,阀门开启,管道恢复正常通气。&Gas solenoid valve works &是由中国电磁阀网提供的国际阀门新闻,译文仅供参考。另外,中国电磁阀网还提供相关产品搜索:电磁阀型号、电磁阀价格、电磁阀技术、电磁阀新闻、电磁阀生产商等。

The following main results are obtained: The TiO_2 photocatalyst with small crystallite size, high surface area, narrow and uniform pore size distribution, and microporous frameworks could be prepared out by applying MW radiation in the preparation process. The microwave-induced fluorescence technique verified for the first time that microwave enhanced the formation rate of hydroxyl radical, leading to the increase in the photocatalytic efficiency. Compared with the conventional catalyst, TiO_2 prepared by MW dielectric heating owns a higher UV absorption ability, and its optical absorption edge and photovoltaic response are shifted toward the short wavelength region, resulting in increase of photooxidation efficiency. The photocatalytic conversion and the mineralization ratio of acetaldehyde are increased respectively by 30% and 40% over the TiO2 prepared by MW radiation when compared to the TiO2 prepared by the conventional heating. For the MW-assisted photocatalytic reaction over the MW-prepared TiO2, production of hydroxyl radicals is enhanced by 22.5%, and the photocatalytic conversion is accordingly increased by 20%. Similarlly, applying MW also increased the photocatalytic conversion and the mineralization ratio of acetaldehyde over TiO2/Al2O3 sample.

论文得到如下主要结果和结论:(1)微波介电加热TiO_2 溶胶可得到晶粒度小、光催化活性高、比表面积大和孔径分布窄而均一,且微孔发达的TiO_2光催化剂;在溶胶干燥处理过程中微波可使催化剂表面缺陷增加,进而导致光催化反应过程有更多的活性羟基自由基产生;(2)微波制备能显著增强TiO_2 样品的紫外光吸收率,并使其光吸收和光伏响应阈值发生蓝移,从而提高TiO_2的氧化还原能力;(3)与常规加热法所制TiO_2比较,微波法制备的TiO_2对乙醛的光催化降解转化率提高30%,CO_2生成率提高40%以上;(4)与未加微波辐射时相比,发现在光催化反应过程中施加微波,TiO_2 的羟基自由基生成速率提高了22.5%,相应CH_3CHO 光催化降解转化率提高了20%;对Al_2O_3/TiO_2催化剂,CH_3CHO 光催化降解转化率甚至提高了33%,同时CO_2 的生成率也都大幅度提高;(5)微波辐射可改变光催化降解乙醛的产物分布,推断施加微波时乙醛光催化降解按照羟基自由基引发的链式反应机理进行,微波&非热效应&起主要作用。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。