查询词典 electron-volt

Secondly, the energy band structure of codoped-TiO2 shows that an acceptor level and a donor level present inside the band gap, and an electron on the donor level passivates a hole on the acceptor level, so the systems still keep semiconductor character and enhance the separation of electron-hole pairs excited by photo irradiation.

另外， V： N共掺杂TiO2的能带结构表明：导带底下方施主杂质能级上的一个电子刚好补偿价带顶上方受主杂质能级上的一个空穴，使掺杂后TiO2材料表现出半导体的显著特征，这有利于电子—空穴对的分离，提高量子产率。

Current, the business affairs of scene area electron of travel developed country already completed the development of 4 phase basically, but the website of business affairs of scene area electron that although also have such as,at present channel of 9 stockaded village, Huang Shan does China weller so, but they just also reached the 2nd level, and major scene area website still is in the first phase.

现在，旅游发达国家的景区电子商务基本已完成了四个阶段的发展，但中国现在虽然也有诸如九寨沟、黄山这样做得比较好的景区电子商务网站，但它们也只是达到了第二阶段，而大部分的景区网站仍处于第一阶段。

In imaging electron optics, for a concentric spherical system composed of two spherical electrodes with electrostatic focusing, the electrostatic potential distribution and the spatial-temporal trajectory of electron motion can be expressed by analytical forms. It is naturally to take such system as an ideal model to investigate the imaging properties, as well as the spatial-temporal aberrations, to analyze its particularity and to find the clue of universalities and regularities.

在成像电子光学中，由两个球面电极组成的静电聚焦同心球系统，由于其静电电位分布和电子运动的空间和时间轨迹能以解析形式表示，很自然被采用作为理想模型，研究其成像特性和空间―时间像差，分析系统的特殊性，从而寻找具有普遍意义和规律性的线索。

The superhydrophobic surface was characterized by scanning electron microscope, optical contact angle meter and X-ray photo electron spectroscopy.

用扫描电子显微镜、接触角测定仪和多功能X射线光电子能谱仪等技术对超疏水表面进行了表征和分析。

The membranes were characterized by X-ray diffraction, Fourier transform infrared, Scanning electron microscope, Transmission electron microscope, Differential Scanning Calorimetry and contact angle meter, and their swelling and sorption properties, diffusion properties, and pervaporation properties were investigated systematically.

利用X一射线衍射、红外光谱、扫描电镜和透射电镜、差示扫描量热仪以及接触角分析等手段对膜的微观形态进行表征，系统研究了膜的溶胀吸附、扩散以及渗透蒸发性能。

This graduation project main research numeral electron compass azimuth computational method, as well as produces from this the digital demonstration question, subsequently realizes the entire digital electron compass system.

本毕业设计主要研究数字电子指南针方位角的计算方法，以及由此产生的数字显示问题，继而实现整个数字电子指南针系统。

This graduation project main research numeral electron compass azimuth computational method, as well as produces from this the digital demonstration question, subsequently realizes the entire digital electron compass system.

该下载资料由本站会员上传，如果侵犯了您的权力，请通知我们，将立即删除！摘要本毕业设计主要研究数字电子指南针方位角的计算方法，以及由此产生的数字显示问题，继而实现整个数字电子指南针系统。

The scandium oxide doped in the barium-calcium-aluminate 5BaO·3CaO·2Al2O3·0.6Sc2O3 compound is supposed to be a carrier for aarium oxide or barium atom which is the electron source, and it plays the role in controlling and roplonishing the electron source.

在掺氧化钪的发射物质5BaO·3CaO·2Al2O3·0.6Sc2O3中，氧化钪的作用则在于它和铝酸盐中的可利用氧化钡结合为2BaO·Sc2O3，成为电子发射源氧化钡或钡原子的载体，它起控制和补充发射源的作用。

By moving electron beam, we guide the deposition of a-C into the center of electron beam, so as to get the desired nanostrucures, such as nanowire, nanosopts, etc.

通过移动电子束，引导无定型碳不断地趋向束斑中心而沉积，从而生长出我们想要的纳米线、点等结构。

There are three different nucleophilic reagent respectively reaction with m-dinitrobenzene ramification at distint alkaline term:With the nitrobenzene 、 m-nirtobenzenesulfone sodium salt 、 2.4-dinitro chlorobenzene 、 m-dinitrobenzene for bottom thing, benzyl cyanide、 benzyl chloride、 benzyl chloropyridine、is a nucleophilic reagent reaction for under the different term proceeds a series reaction. At the same time ,discuss about the impact factor to nucleophilicity such as the number of attract electron group、 ability of attract electron and the nucleophilic substitution reaction part.

设计了三类不同的亲核试剂分别与活化芳环在不同的碱性条件下发生反应：以苄基氰、苄基氯化吡啶为亲核试剂，以硝基苯、间二硝基苯、间硝基苯磺酸钠、2，4-二硝基苄基氯为底物进行亲核取代反应；并且对亲核试剂的体积效应、溶剂效应对亲核性影响，底物上吸电子基团的数目、吸电子能力对亲电性的影响，以及亲核取代反应的发生部位受哪些因素影响进行探讨。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。