An approach to generate a flat optical comb with tunable comb spacing and adjustable comb number is proposed.
提出并研究了一种新型、简易平坦光学频率梳的生成方案，它具有可调谐梳状间隔、可变光梳谱线数目。
The timing between pulses determines the spacing between the teeth of the frequency comb.
脉冲的定时间隔决定了频率梳的齿间距。
When contrast-enhanced CT depicts hypervascularity of the mesentery with vascular dilatation, tortuosity, and wide spacing of the vasa recta , the comb sign is produced.
当增强CT显示血管扩张、迂曲而血管增多的肠系膜和广泛分布的直小血管，产生梳征。
When contrast-enhanced CT depicts hypervascularity of the mesentery with vascular dilatation, tortuosity, and wide spacing of the vasa recta , the comb sign is produced.
当增强CT显示血管扩张、迂曲而血管增多的肠系膜和广泛分布的直小血管，产生梳征。
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