The main difficulties in implementing 3-d imaging by a 2-d array are the need for more elements and more channels, the system complexity and weak signals.

基于二维阵列的三维成像在实现上具有阵元多、通道数多、系统复杂、回波信号弱等困难。

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For realizing symbolic substitution rules of binary addition. This paper proposes a simple optical logic system which includes only one 2-d array of optical bistable device.

为了实现二进制加法符号替换规律，本文提出了一种简单的光逻辑系统，它仅包括一片二维列阵光学双稳器件。

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The 2-D array coding method is applied and the corresponding fitness function in PSO is constructed for solving the model. The program for calculation by means of computer is developed.

PSO算法采用二维数组编码方法，构造了相应的适应度函数，编制相应的计算机求解程序。

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While the Quadricycle, the 1909 Model T and a 1932 V-8 Ford are cars you'd expect to see in an array of historic vehicles, the value of "Driving America" is in the way that it presents cars you would be more likely to find in a junkyard than a museum.

WSJ: The Henry Ford Prepares a Museum Makeover

As I wished, I'd like to get all Earthlings spending a bit of their day looking at data from the Allen Telescope Array to see if they can find patterns that all of the signal detection algorithms may still be missing, and while they are doing that, get them thinking about their place in the cosmos.

CNN: What if there's somebody else out there?