热电子的

As aconsequence, the overall physical parameters of the CSR electroncooling system are given. Also, the key device------the electron gunare designed, and the adiabatic expansion scheme are proposed.Additionally, resolution limits of the cooled heavy ion beam in thestatic operation condition and an internaltarget experiment are analysized quantitatively. Furthermore, the beamloss and the lifetime are studied systematically. As a result, therequirement on the CSR vacuum conditions and the allowablethickness of the internal target are determined.

完成了CSR电子冷却装置的总体物理参数和关键部件-------电子枪的设计，并提出了在CSR上采用绝热展开技术；完成了重离子冷却储存环上束流储存寿命的系统研究，从而提出了CSR应具备的真空条件和允许的内靶厚度，并由此得到了CSR准连续束模式下的内靶实验亮度；此外，对CSR重离子束的分辨率极限作了定量的分析。

It has been found that the coercive force is very sensitive to the temperatu...

对恒温热磁处理的样品的结构状态，进行了电子显微等的研究，表明由于事先的恒温处理条件不同，造成了α′相的不同分散度、不同形态和不同的永磁性。

The several kinds of Ag-NiFe2O4 cermets with different mass percent of Ag have prepared. Microstructural changes were observed by scanning electronic microscope and composition was determined with x-ray detector. Effect of different content of Ag on the density, property of thermal shock,conductivity and corrodent rate were tested. The results showed that the thermal shock performance and conductivity have improved in company with the addition of content of Ag.

制备了不同金属Ag含量的Ag-NiFe2O4金属陶瓷，利用扫描电子显微镜观察显微组织，由X射线衍射分析化学成分，研究了Ag的添加量对其体积密度、气孔率、热震性、导电率以及腐蚀速率的影响，试验结果表明，抗热震性和导电能力随着Ag含量的增加而增强，导电率的提高和腐蚀率的增大仍是一对突出的矛盾。

The residual gas pressure in an electron tube can be measured when the tube itself is operated as a hot cathode ionization gauge.Usually,its sensitivity K is determined by the method of gauge calibration.In this paper,author try to determine the sensitivity K by ca- lculation.The formulae for this purpose have be found out,and are used for both plate and cylindrical electrode systems.

把电子管接成热阴极电离计的工作形式，用来测量管内残气压强时，其灵敏度如何计算的问题在本文中作了讨论，给出了平板形电极系统和圆柱形电极系统的灵敏度解析式，对式中各量的计算作了详细介绍；并指出四极管中电子在电离区的平均渡越次数的表示式与三极管中的完全不同。

Because the carbonyl in its structure is with strongly absorb-electron effect, so it is a kind of non-proton polarity solvent with high boiling point, high flash point and low melting point, use conveniently for many processing operation such as filtration, distillation, solvent extraction, and so on; it is with very low toxicity, so the harm to human body is inappreciable, and reduce the environment pollution; due to its very strong dissolvability, it can dissolve organic matter, inorganic matter, resin, polymer, etc., and activate all kinds of reagent, mix to dissolve the other high boiling point solvents; it is with very good stability, it is stable under the hot strong alkali and acidity condition, it is with water-resistance and light, oxygen stability.

246℃ m.p：—20℃闪点121℃ flash point： 121℃分子式：C6H12N2O molecular formula： C6H12N2O 分子量128.18 molecular weight： 128.18 二、DMPU的化学性质 Chemical character of DMPU 其结构中由于羰基具有强烈的吸电子效应，因而它是一种非质子的极性溶剂，具有高沸点、高闪点、低熔点，在过滤、蒸馏、溶剂萃取等工艺操作中使用方便；毒性极低，对人体危害微不足道，也减少了对环境的污染；由于它具有极强的溶解性，能溶解有机物、无机物、树脂、聚合物等，并对各种试剂具有活化性质，还能与其它高沸点溶剂混溶；具有极好的稳定性，在热的强碱和酸性条件下都很稳定，还具有耐水性及对光、氧的稳定性。

A general form of Hamiltonian for vibronic Jahn-Teller systems is derived on the basis of adiabatic approximation and group theory. The electronic operators and active Jahn-Teller modes appeared in a vibronic system are also discussed.

本文基于绝热近似和群论导出了电声耦合系统的哈密顿量的一般形式，讨论了电声耦合系统中的电子算符和活跃的声子模式。

This dissertation presents the effects of formation potential range, heat treatment, and the thermal additive, vinylene carbonate, on the formation and stability of SEI by electron spectroscopy for chemical analysis, fourier transform infrared spectroscopy, differential scanning calorimetry, nuclear magnetic resonance, AC impedance, and certain standard electrochemical techniques.

因此，本论文从三方面著手，分别探讨化成程序的电位范围、热处理、以及热添加剂乙烯碳酸酯（vinylene carbonate；VC）对此钝化层造成的影响。所采用的分析工具包括X光线电子光谱、富利叶红外光谱、差分扫瞄式卡计、核磁共振光谱、交流阻抗频谱及一些标准的电化学分析技术。

At carbonizing temperature between 425 ℃ and 720 ℃,the micropore volume is between 0.124-0.222 mL/g. Surface of the carbon is also observed by scanning electron microscopy. During thermogravimetric analysis,the cell wall of coconut shell disassembles to form macropore at μm level while its cellulose structure was retained.

本研究还探讨了椰壳炭的孔结构参数，炭化温度 4 2 5～ 72 0℃，其微孔容积为 0 。12 4～ 0 。2 2 2mL / g ，并用扫描电子显微镜观察了椰壳炭的表面形貌，椰壳在热分解时，细胞壁分解形成了微米级的大孔，并保留了椰壳的纤维状结构。

Push a science technical development:Car is gather a voice, light, machine, give or get an electric shock, hot, the electronics, chemical engineering, beautiful work is in the whole body of high-tech product, is also unique in the world of a kind of spare parts with ten thousand account, the yield be accounted with ten million, retention quantity with hundred million account, the selling price be accounted with 10000 dollars of merchandise.

推动科学技术的发展：汽车是集声、光、机、电、热、电子、化工、美工于一身的高科技产品，也是世界上唯一的一种零件以万计、产量以千万计、保有量以亿计、售价以万元计的商品。

A Computer program of the hot starting and shutdown transients of a simple pressurized liquid bipropellant rocket engine is given,based upon the idea and basic equations provided by W.T.Webber etal.and mainly applying priem's combnstion model and feeding system distribution para- meter model.The hot starting and shutdown transients are calculated on 441B-Ⅲ digital computer and the elementary results arc obtained.

本文依据 W.T.Webber 等人提供的思路和基本方程，基本采用了 Priem 的燃烧模型和管路系统分布参数模型，为简单的挤压式双元液体推进剂火箭发动机热启动——关车瞬变工作过程编写了计算机程序，并在441B—Ⅲ型电子计算机上进行了计算，得出了初步的结果。

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&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。