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。
Introduce the massive concrete construction technique and experience in annular beam of Nantong gymnasium meeting and exhibiting center.
介绍了南通市体育会展中心体育场环梁大体积混凝土的施工技术和经验。
The closed-form expression for the mean squared beam width of annular beams propagating through atmospheric turbulence is derived by using the integral transform technique.
采用积分变换技巧，推导出了环状光束通过湍流大气传输二阶矩束宽的解析表达式，并研究了湍流对环状光束扩展的影响。
The energy distribution of far field spot for annular aperture Gaussian beam is discussed and the fitting expression is given.
讨论环形孔径高斯光束的远场光斑能量分布，并给出拟合表达式。
The 'hot' dispersion equation of the coaxial ridge-disk-loaded cylindrical waveguide TWT with an annular electron beam can be firstly obtained according to self-consistent field theory.
引入薄环形电子注，首次建立了脊加载同轴膜片圆波导的注波互作用线性理论，得到小信号条件下的色散方程。
During the welding process, the computer will modify the position of the electron gun based on the deviation to make the electron beam spot centered on the annular weld groove.
在焊接时利用处理后的偏差值在圆形焊缝相应位置不断修正电子枪的位置，从而达到电子束束斑与焊缝自动对中的目的。
Based on thin annular electron beam approximation, the focusing effect of plasma is investigated.
在薄环形束的近似下讨论了等离子体对空心电子束的聚束作用。
It is shown that to propagate an annular electron beam in PPM is possible.
研究认为可以使用PPM对环形电子束进行传输。
The results indicate that flat-top beam shaping and single-circle beam shaping at the focal plane can all be realized by using three-zone annular phase pupil filters.
模拟结果表明，利用三环相位光瞳滤波器，不仅可以在焦面上实现光强的平顶分布，而且还可以得到单环衍射光束。
A model of an annular flat-topped vortex beam based on multi-Gaussian superimposition is proposed.
基于多高斯函数叠加方法，提出了环形平顶涡旋光束模型。
A model of an annular flat-topped vortex beam based on multi-Gaussian superimposition is proposed.
基于多高斯函数叠加方法，提出了环形平顶涡旋光束模型。
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