He opened the grey box, but found nothing in it.

他打开灰色盒子，里面什么也没有。

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In this paper, an oilfield is taken as a dynamic system from the view of a grey box system control.

本文从灰色系统控制角度出发，将整个油田看作是一个动态系统。

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Grey box model identification for railway cars system is simulated and tested in laboratory by grey box software tools, it is proved that the scheme is feasible and valid.

应用灰箱辨识软件对车辆系统的灰箱模型辨识进行了仿真研究和实验室试验验证，证明了所提出方案是可行和有效的。

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Gone, is the old boring dull grey box look and in comes bright and vivid colors and designs that excite.

ENGADGET: Commodore knocks a home run with MLB-themed gaming rigs

It might not look full of promise but a lot of hope is hanging on a big grey box at a Cornwall wind farm.

BBC: Roscrow wind farm tests strain of green energy on power grid

Along with the rest of the equipment loaded into the back and strapped on to the roof of the ambulance, there is one modest-looking grey box.

BBC: Mobile technology battles HIV