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。

youdao

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