查询词典 electron-volt

MGM is introduced to solve field distributions in 3-D electron optical systems. The difference equation, the discrete form of Laplace's equation, is deduced in 3-D Cartesian coordinates. In view of the smooth effect, MGM combines Gauss-Seidel iteration with a technique known as coarse grid correction. Formulae for restriction and prolongation are deduced and expressed in terms of tensors.

将多重网格法引入电子光学系统中三维静电场的计算，对三维笛卡尔坐标系中的差分方程，采用高斯-赛德尔迭代法求解差分方程组，并结合迭代过程讨论了粗网格的误差校正技术；在不同网格层之间进行场值的限制和延拓，推导了三维静电场中的限制、延拓公式并以张量的形式表示。

In this study, we used poly L-latcide, poly DL-latcide-co-glycolide 75:25 (PLGA7525) and poly DL-latcide-co-glycolide 50:50 (PLGA5050) during citric acid inducing ammonium bicarbonate gas forming process to form porous polymer film, and rolled the porous polymer film to make nerve conduits with pores and multi-layered. Electron Spectroscopy for Chemical Analyzer and Attenuated Total Reflectance – Fourier-Transform Infrared Spectrometer were employed for determining elements' functionabilities and chemical compounds. Charge Coupled Device camera and Scanning Electron Microscope were employed for macroscopic and microscopic morphologies and structural observation. Differential Scanning Calorimetry was employed for measuring glass-transition temperature. Nano-indentation system was employed for measuring elastic modulus and hardness. Biodegradation and water absorption ratios were measured to analyze their chemical properties and SEM was employed for microscopic morphology of the tested nerve conduit.

本研究将以聚乳酸、聚乳酸-聚甘醇酸共聚合物（75：25）、聚乳酸-聚甘醇酸共聚合物（50：50）做为研究材料，以柠檬酸诱发碳酸氢铵发泡之气泡成型法制作具有相连通孔隙之高分子薄膜，再将高分子薄膜卷制成特殊多层的导管，制作具有多层孔隙之新型神经再生导管，以电子能谱化学分析及减弱式全反射-傅立叶转换红外线光谱分析进行成份分析及化学元素测定；以电荷耦合元件摄影机、扫瞄式电子显微镜进行多层孔隙型神经导管巨观及微观形态结构观察；以示差扫瞄热量量测分析玻璃转换温度、奈米三维量测弹性模数及硬度；以及进行降解性质测定，并以扫瞄式电子显微镜进行降解后之导管微观结构形态观察。

Electron microscope of the scheme of chart of X ray diffraction that analyses composite material, transmission and photograph of scanning electron microscope make clear: OMMT basically is with coming off condition disperses in PLA matrix, form in order to come off model give priority to, the accept rice that at the same time existence inserts a structure composite material, the affiliation of OMMT makes the drawing section of composite material ruptures to tenacity by brittleness change.

分析复合材料的X射线衍射谱图、透射电子显微镜和扫描电子显微镜照片表明：OMMT主要以剥离状态分散在PLA基体中，形成以剥离型为主、同时存在插层结构的纳米复合材料，OMMT的加入使复合材料的拉伸断面由脆性断裂向韧性断裂转变。

The mechanism of multiple-ionization is analyzed. The highly charged recoil ions come mainly from the Auger effect. The electron-electron interaction comes in to effect as the incident energy increases.

对多重电离的电离机制分析表明：高价态的反冲离子主要来自于俄歇贡献；随着入射能量的升高，电子-电子间的库仑作用也逐渐显现。

Different from cold cathode glow discharge, the avalanche process is not only determined by electron collision induced ionization, the deionization process also plays a decisive role due to the high electron and ion density under high gas pressure and large discharge current.

与常规辉光放电不同的是，阴极区中的巨浪增益不仅仅是由电子碰撞电离过程决定的，而且由于高压强、大电流条件下电子和离子的浓度高，电子空间复合过程也起着决定性作用。

It contains divine light, atom , proton , electron , neutron , anti-proton, photon, anti-electron, antineutron, and also anti-energy and antimatter particles that exist in and make up your aura or auric field .

它含有神性的光、原子、质子、电子、中子，反-质子，光子，正电子，反中性子，同样也有反-能量和反物质粒子在光环里存在和由光环或金场组成。

For instance, the electron neutrino is created from the change from proton to neutron while the electron antineutrino is formed from the change of a neutron to a proton.

例如，电子中微子是由质子转变成中子时产生的，儿电子反中微子则有中子转变为质子是产生。

The Cherenkov radiation is caused by an electron moving faster than the speed of light in The Cherenkov radiation is caused by an electron moving faster than the speed of light in the a a medium, such medium, such as gas.as gas.

CherenkovCherenkov辐射是由速度超过介质内光速的电子在介质辐射是由速度超过介质内光速的电子在介质里里的运动所产生。

To solve this problem, a multi-electron-beam Cherenkov free -electron laser was proposed and theoretically analyzed. A MCFEL oscillator experiment was carried out to demonstrate its feasibility and advantages.

为了验证多电子束契伦柯夫自由电子激光的可行性和优越性，我们开展了多电束契伦柯夫自由电子激光振荡器联合实验研究。

So, our main work is to obtain a satisfactory electron beam with diameter about micrometers by means of choosing a suitable LaBe cathode electron-gun system and a suitable focusing system.

电子束打靶产生X射线已经是很成熟的理论，因此，本论文的理论研究重点是选择合适结构的电子源系统与合适结构的聚焦系统并将电子束会聚为微米级的细小束斑。

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。