The two-way data is usually necessary for the quantitative analysis of the gray system.

未知背景的灰色体系的定量分析通常需要二维数据。

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It is worth while to apply the gray system model to predict the forest growth in practice.

在林业生产实践中，用灰色系统模型预测人工林材积生长率有其适用价值。

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The forecasting of irrigation water use is influenced by many factors and it belongs to the gray system.

灌溉用水量的预测影响因素很多，属于灰色系统问题。

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Two decades ago he exploited the shadowy system of gray-market capitalism in the Soviet Union.

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Yes, another gray area in the system.

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Naturally, because it was a gaming party, they drew up a poster with images of a Nintendo game controller and the Zapper, a gray-and-red electronic pistol that came with the 1985 Nintendo Entertainment System.

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