In this paper a model of production declining was established by the application of the GM (1, 1) model in the gray system theory proposed by Mr.

本文利用邓聚龙提出的灰色系统理论的GM(1,1)模型对油田递减规律建模。

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Grayson says Mexico's gross domestic product is likely to drop 5.5 percent this year due to the flu scare, the worldwide recession and declining production from Mexico's oil fields.

VOA: standard.2009.06.09

Far from declining further, he predicts production will double.

VOA: standard.2010.08.06

Milk production is declining, as is investment in farms.

ECONOMIST: Industrial dairy farming

But the North Sea's declining production can no longer be relied upon to meet demand (see chart).

ECONOMIST: Natural gas

With food production per capita declining, the country has to rely on food imports to feed itself.

CNN: Can Ghana's economy prosper against the odds?