Annular reverse flow zone can be found too in the combustor with the flat-straight slag baffle.
简单环形挡渣板也能产生环形回流区，在旋风燃烧室设计中可取代锥形缩口挡渣板。
The transverse resolution of two zone leaky annular pupil filter increases with the central transmissivity decreasing, and in common cases axial resol.
二区漏光环型光瞳滤波器横向分辨率随中心透过率的减小而增大，一般情况下轴向分辨率随中心透过率的增大而增大。
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。
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。
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