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electron
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  电子
     Study of Electron Field Emission from Nanostructures
     基于纳米结构的场致电子发射研究
短句来源
     High Resolution Transmission Electron Microscopy Study of Microstructures of the Dielectric and Colossal Magneto-resistance Materials
     电介质和庞磁电阻材料微结构的高分辨透射电子显微术研究
短句来源
     Theoretical Study of the Dynamics of Electron Transfer in Biomolecular System
     生物分子体系中电子转移动力学理论研究
短句来源
     Solid-Liquid Transition in a Two-Dimensional Electron System: A Monte Carlo Study
     二维电子体系固-液相变的蒙特卡罗研究
短句来源
     Investigations of Microwave Plasma CVD Nanocrystalline Diamond Field Electron Emission
     微波等离子体 CVD纳米金刚石场致电子发射研究
短句来源
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     Transmission Electron Microscopy Investigation of Oxygen Precipitation and Induced Defects in Czochralski Silicon
     直拉硅单晶中氧沉淀及其诱生缺陷的透射镜研究
短句来源
     THE MICROSCOPIC THEORY OF AN IDEAL ELECTRON AVALANCHE DISCHARGE
     理想繁流放微观理论
短句来源
     1:1 ELectron image Projector
     1比1子图象投影仪
短句来源
     Electron energy distributions and transport coefficients in electrically excited Ne-Xe-HCl
     激励Ne-Xe-HCl混合物的子能量分布函数和输运系数
短句来源
     AN ELECTRON MICROSCOPE OBSERVATION OF INTERPHASE CARBIDE PRECIPITATION IN 10MoWVNb
     10MoWVNb钢中相间沉淀碳化物的镜观察
短句来源
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  电子束
     Numerical Simulation of D.C. Arc Plasma Torch and the Physical Study of Electron Beam Ion Trap
     直流电弧等离子体发生器的数值模拟及电子束离子阱物理研究
短句来源
     Mechanism and Numerical Simulation of Materials Modification by High Current Pulsed Electron Beam
     强流脉冲电子束材料改性机制及数值模拟
短句来源
     Study of Electron Beam Liquid Lithography
     电子束液态曝光技术的研究
短句来源
     Microstructures of Metal Materials Induced by High Current Pulsed Electron Beam
     强流脉冲电子束作用下金属材料的微观结构状态
短句来源
     Study on Monte Carlo Simulation of Electron Beam Lithography and Proximity Effect Correction Technique
     电子束光刻的Monte Carlo模拟及邻近效应校正技术研究
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  “electron”译为未确定词的双语例句
     Electron gun CAD of Gyrotron
     回旋管电子枪CAD
短句来源
     Study on Cavity Electron Cyclotron Maser
     腔体回旋脉塞器件的研究
短句来源
     Studies on the General Cavity Theory Based on Virtual Electron Source Concept
     基于虚源概念的空腔电离室理论研究
短句来源
     Synthesis and High-resolution Electron Microscopy Characterization of Mesoporous Materials
     介孔材料的合成及高分辨电子显微镜表征
短句来源
     Investigation on the Phase Transitions and Mechanical Properties of Titanium and Titanium-aluminum Compound Based Alloys with the Valence Electron Theory
     钛与钛铝化合物基合金相变及力学性能的价电子理论研究
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  electron
The surface characters were observed by scanning electron microscope.
      
X-ray diffraction and selected area electron diffraction analysis showed that Pt-Sn-B/CNTs had an amorphous alloy structure that can improve catalytic performance.
      
Transmission electron micrograph image showed that the catalyst particles were highly distributed on the surface of CNTs.
      
The polymers were characterized by IR spectra, thermal-weight analysis, scanning electron microscope and laser particle size analysis.
      
High-resolution transmission electron microscopy observation indicates that the nanocapsules are hollow-structured with a wall thickness of about 6 nm.
      
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The beta-ray spectrum of RaE was investigated by the cloud chamber experiments. About 600 tracks with H σ above 2000 were obtained. The spectrum was found to have an end point at 7500 Hσ. The average energy per disintegration was estimated to be 4.01×105 electron-volts.

戊种镭原质(Ra E)所放出之β线穿过威尔圣成云箱之径迹(tracks),用照相机照下。因成云箱在磁场中,而磁力之方向又与β线所取之途径垂直,故由照片上所量出径迹之半径,ρ,可定β线之能力,盖磁场之强度,H,亦已知也。通常以Hρ代表能力大小之相当值。用戊种镭原质所摄之照片上量出10Oβ线径迹,其Hρ值皆在2000高斯-厘米(Gauss-cm.)以上。以各种Hρ值及在该值范围内所有径迹之数目作一曲线。将该曲线延长至与Hρ轴相交,其交点7500高斯——厘米,即为β线具有最大能力者之Hρ值。由β线能力大小之分配,用绘图方法得计算该线之平均能力,其值为4.01×10~5电子——伏特(electron—volts)。

A simple calculation has been carried out for the absqrption coefficient of H-. The matrix component of transition is calculated from the combination of a free-electron wave function obtained by averaging the Hylleraas wave function for H- over the coordinates of one electron. The absorption coefficient covering a wide range of optical spectrum is in the order of 10-17 cm2.

本文根据波动力学计算H~-之吸收系数若H~-吸收较短於λ=17254A光线时,吾人应得一极宽连续光谱。依本文极简单计算,其系数大都在10~(-17)cm~2附近。

An attempt to observe the spectrum of doubly excited helium by excitation by electron impact, with energies between 500-600 electron volts, is made without success. This and other failures are discussed by considering of the life times of the doubly excited states. An approximate calculation gives for 2s3s3S a life time of the order 10-15 sec, corresponding to a natural width of the level of the order 1000 cm-1. While this accounts for the absence of a line spectrum of doubly excited helium, it renders...

An attempt to observe the spectrum of doubly excited helium by excitation by electron impact, with energies between 500-600 electron volts, is made without success. This and other failures are discussed by considering of the life times of the doubly excited states. An approximate calculation gives for 2s3s3S a life time of the order 10-15 sec, corresponding to a natural width of the level of the order 1000 cm-1. While this accounts for the absence of a line spectrum of doubly excited helium, it renders the former suggestion that the corona lines may be due to it untenable.

(1)日晕光谱线之来源,至今为未决定之问题。Goudsmit与吴大猷曾假设诸谱线乃由氦气双激起原子所生。过去有人企图用实验方法得到双激起氦原子之光谱,未能成功。但有数种实验室内现象,均有人用此假设以解释之。故作者希望在适当情形下得到双激起氦原子之光谱。 (2)由理论上知用电子撞击法造成双激起之可能性甚小,但此可能性之最大值在电子能为300至600electron volts时故作者企图在人为的此种情形下观察双激起氦原子光谱,但结果未能发现。 (3)此种实验结果可从理论方面予以解释。作者由双激起2s3s~3S状态之计算,知其谱线之宽约为1000cm~(-1),故实验时不能观察因此以前关於日晕光谱之解释,亦成疑问。

 
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