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In order to solve the problem that the paths of angular distribution at focus plane and beam spot at image plane can not be measured at the same time,an advanced measurement of optical transition radiation was proposed.

为了解决理论测量中，光学渡越辐射焦平面的空间角分布与像平面的束剖面光路互相影响，难以同时测量，提出了一种新型的光学渡越辐射光学特性的测量方法。

In recent years, there have been many researches focusing on orbital angular momentum of light beam in the field of optics.

近年来，在光学领域内，关于光束轨道角动量的研究，受到广泛的关注。

Rotation of particles by using the beam with orbital angular momentum .

利用具有轨道角动量的光束实现微粒的旋转。

The results are helpful to the research of the focus of partially coherent annular beam.

这些结果对研究部分相干环形光束的聚焦性质是有帮助的。

Based on thin annular electron beam approximation, the focusing effect of plasma is investigated.

比较了在不同气压和空心阴极孔径下虚阳极的形成时间和扩展速度。

The transform formula of partially polarized GSM beam in dispersive and absorbing media as well as in anomalously dispersive media is derived.

利用张量方法导出了部分偏振GSM光束在色散吸收介质和负色散介质中的传输公式。

Based on the temperature-dependent complex dielectric constant of Indium Antimonide, an InSb-dielectric-InSb plasmonic waveguide structure with the grating is proposed. At the frequency of 1 THz, a directional beam is obtained, and its radiation direction can be controlled by changing the temperature difference between the grating structures on each side.

本文根据锑化铟材料在THz波段下复介电常数对温度的响应特性，采用了带有光栅的锑化铟-介质-锑化铟的表面等离子体波导结构，实现了1THz频率光束的准直出射，并能够通过调整结构两侧光栅的温度差来控制出射光束的角度。

The improvement of the aperiodic array's beam pattern made by the spectral decomposition method is analyzed.

为配合新一代三维视觉声纳的开发，研究了谱分解波束形成方法。

The relationship between transmitter, receiver apex angle, beam divergence, and the value of loss-time delay are simulated by model developed by Luegtten. Energy distributing is elicited in the fixed angles.

该文通过利用Luettgen提出的非视距单散射模型，比较了在不同仰角、光束孔径角情况下，损耗、延时、脉冲半宽展宽的变化特征，并给出了不同传输距离下能量密度的分布情况。

This paper considers one computational method of the eigenvalues' approximate value of the horizontal vibration problem of beam.

本文考虑计算梁横向振动问题的特征值的近似值的一种算法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。