We analyze the pattern function of DBF in subarray under the ideal condition and with channel mismatch, and give the pattern functions of sum and difference beam.

本文分析了子阵d BF在理想通道条件及通道失配情况下的方向性函数，给出了其和差波束方向性函数特性。

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This paper analyses the pattern function of DBF in subarray. The designing method for directivity pattern is given and the condition of producing the grating lobe is discussed.

详细分析了由子阵构成的DBF的方向性函数特性，给出了方向图的设计方法，并讨论了其栅瓣产生的条件。

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The groove pattern function was employed to express the curvature and groove space of aberration reducing gratings, and the dispersive system containing a single grating was discussed.

用光程函数和费马原理研究光栅的成像，用刻槽分布函数表示光栅的刻槽曲率及间距变化。

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The idea of a function is, that I'm going to capture a common pattern of computation.

函数的目的,就是寻找计算的共同模式。

麻省理工公开课 - 计算机科学及编程导论课程节选

The new study, which only focused on the hours between 8am and 5pm, suggests that lung function may be controlled by the same pattern.

BBC: NEWS | Health | Lungs 'best in late afternoon'

Its movement looks like a regular sine wave function within pretty defined parameters, and this pattern has held true for the last 1200 days.

FORBES: Microsoft Earnings and Xbox Event Will Likely Meet Expectations...and That's the Problem