The space frequency distribution on rear focal plane restores to the distribution of complex amplitude on image plane.

后焦面上的频率分布还原成像面上的光场复振幅空间分布。

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In this paper, a method imaging with variant space frequency linear interferometric fringe is presented and is demonstrated by experiments.

本文提出利用变空间频率直线干涉条纹对目标成像的方法，并用实验进行验证。

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There are six grades of space frequency, twelve grades of time frequency, twelve grades of visual field and different showing-time for each patterns.

该装置可以显示水平光栅、垂直光栅和棋格信号，具有六档不同的空间频率、十二档时间频率、十二档视野范围和显示时间控制。

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This grid of horizontal lines, and we will know that if we're going from here to here, it's got to be exactly this frequency, or at least this space.

这个水平线组成的网格,让我们知道,从这里到这里,正好是这样的频率,或者至少是这个间隔

耶鲁公开课 - 聆听音乐课程节选

The radiation just spread out into space - where it still is and can be detected as weak waves of radio frequency.

BBC: Pictures of the early Universe