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An extremely high temperature of anode humidification is also unreasonable; as a result, when the current density is high, the liquid water should be injected directly into anode gas channel to guarantee both high inlet H〓 concentration and well-humidified membrane. 4. The utilization of Pt in the cathode catalyst layer will decrease with the increasing current density; as a result, based on the principle of maximal Pt utilization, the catalyst layer can be designed much thinner or not uniformly in the catalyst distribution.

而在此截面上,交指型流场燃料电池阳极侧的液态水饱和度的极值位置并不确定;在电池阴极处,液态水饱和度的极值总是出现在z=0.002m处的气体扩散层和膜的界面上,并且该处的液态水饱和度沿x方向存在一个最大值,与此相应的氧气的质量浓度分数在该处达到极小值,因此极限电流密度将首相出现该处,但总体来说液态水饱和度沿x方向的分布较为均匀。4。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法,制备出了孔径在20-150nm之间可调和具有不同孔结构(如Y形、树枝状、锯齿状)的系列多孔氧化铝模板,在此基础上,利用电化学沉积、气相催化生长和化学控制腐蚀等方法,成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系,探索了基于模板孔壁内沿生长一维结纳米材料的机制,较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能,为低维纳米材料器件化提供了实验基础。

The creative aspects in this dissertation are summarized as below:(1) In relation to the BJT/FWD integrated device, two new ideas are proposed. One is to extend the diode anode metalization to the region between the BJT and the diode regions to realize a Schottky contact to release the influence of the BJT region on the diode switching performance.

本论文创造性的工作包括以下三个方面:(1)在双极功率三极管与续流二极管构成的集成器件方面,提出了两个创新点,一个是将集成二极管的阳极金属化延伸到二极管和功率三极管之间的区域形成肖特基接触,以此来减弱同一芯片上的功率三极管区域对续流二极管开关速度的影响;另一个创新点是将集成二极管的结构由传统的PiN结构替换成含有肖特基接触的MPS结构。

The synergistic effect of Cu and Mn is listed as follows:(1) On improving the structure of rust layer, addition of Cu and Mn can reduce cracks and pores in rust layer;(2) On altering the composition of rust, it can increase the amount of Fe3O4 and γ-FeOOH, while decrease that of β-FeOOH;(3) On the chemical state of alloying elements and selectivity of rust layer, it mainly convert the anion selectivity to canoed selectivity;(4) On the electrochemical aspect, it can decrease the anode current density and increase the corrosion potential of steel.

Cu、Mn的协同作用主要体现在以下几个方面:在改善锈层结构方面,主要是减少锈层中的裂纹与孔洞,提高锈层与基体的结合强度;在改变锈层组成方面,增加Fe3O4和γ-FeOOH的含量,降低β-FeOOH的含量;在元素化学状态与离子选择性方面,促使锈层由阴离子选择性转变为阳离子选择性,抑制Cl-的渗透;在电化学方面,大幅度降低阳极电流密度,提高钢基体的自腐蚀电位。

Cathode ray tubes are used as the display device in television sets and computer monitors, and magnetrons are the source of microwaves in microwave ovens.

目前,由于消耗功率及体积的考量,真空管多半只运用在少数的特定用途中,特别是高功率高频的通信用途,但近年来,或许是怀旧的气氛使然,某些特定音响用途的真空管再次流行,形成消费电子领域奇特的风潮。另外,像是阳极射线管,X射线管等等则是属于特殊的真空管。

Zinc Phosphate will render coating materials excellent rust-preventing performance and good resistance to water.

磷酸锌在三价铁离子具有很强的缩合能力,这种磷酸锌的根离子与铁阳极反应,可形成以磷酸铁为主体的坚固的保护膜,这种致密的纯化膜不溶于水、硬度高,附着力优异呈现出卓越的防锈性能,由于磷酸锌基因具有很好活性,能与很多金属离子作用生成络合物,因此,具有良好的防锈效果。

Created by specialists Oak ridge micro-Energy prototype of the power source remained operable at a very high temperature - 170 C. by the guarantee of success it became the correctly selected combination of materials anode and cathode battery.

建立由专家橡树岭微能源的原型的动力源仍然是可操作性,是在一个非常高的温度-1 70长由成功的保证,成为正确选定组合的材料的阳极和阴极的电池。

The direct amperometric titration of amines with sodium tetraphenylborate solution based upon anodic depolarization at a dropping mercury electrode by the use of excess TPB titrant, was systematically investigated.

本文研究了用pH8的四苯硼酸钠水溶液对胺类的直接电流滴定法。滴汞为阳极,饱和甘汞为阴极,以3%琼脂的饱和NaCl溶液为盐桥组成电解池。适宜的滴定条件是:外加电压+0.18伏;底液为pH 2-3的HAc-NaAc介质,而以1%HAc更为方便;滴定体积为10-20毫升。

A portion of the electrolysed solution can be removed as a bleed stream from a cathode compartment of an electrolytic cell of the electrolysis process and processed to remove manganese as manganese dioxide precipitate by adding thereto limestone, and the halide species from an anode compartment of the electrolysis process.

部分电解溶液可以作为来自电解过程的电解槽的阴极室的排出液,并通过添加石灰石和来自电解过程的阳极室的卤化物处理,以二氧化锰沉淀物形式除去锰。

The results indicate that the cell only doped with Al2O3 (Cell 1) is of the worst output performance at 850 ℃, the output power density being 0. 083 W/cm^2, and that the cell doped with Al2O3 and coated with buffer layer (Cell 2) is of the best output performance at the same temperature, the output power density being 0.120W/cm^2. AC impedance spectroscopy analyses indicate that the interface resistance and Ohmic resistance of Cell 2 are obviously less than those of Cell 1, meaning that insulative nickel aluminum spine1 is generated by the reaction of Al2O3 and NiO during the sintering at a high temperature.

结果表明:850℃时,含Al2O3的电池输出性能最差,输出功率约为0.083 W/平方公分;含Al2O3并具有过渡层的电池输出性能最好,输出功率约为0.120 W/平方公分;交流阻抗谱分析表明,含Al2O3并具有过渡层的电池的欧姆电阻与界面电阻均比不含过渡层的明显减小,说明YSZ中添加的Al2O3在高温烧结过程中,与阳极材料NiO发生反应生成不导电的镍铝尖晶石。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。