Traditional energy resources, such as coal, oil and natural gas are non-renewable, which means that the world will eventually run out of them, constituting the main threat to energy resources.

例如煤炭、石油和天然气等传统能源是不可再生的，这就意味着世界的这些能源将最终消失，这主要威胁了世界的能源资源。

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A mathematical model for calculation of bottom-hole flowing pressure of flowing Wells for oil field with non-solution gas drive is proposed.

对非溶解气驱油田提出了一个计算自喷井井底流动压力的统计数学模型。

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It is widely used in the fissure detection, pressure prediction, dynamic reservoir monitor, oil-gas prediction, stratum's non-uniform depiction.

在裂缝检测、压力预测、油藏动态检测、油气预测、储层非均质性描述方面得到广泛应用。

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But in the absence of fiscal tightening that significantly cuts the non-oil and gas fiscal deficit, a severe and sustained drop in the oil price would have a damaging impact on the Russian economy and public finances and would likely lead to a downgrade, Fitch warned.

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He says he wants the private sector to make up 70% of non-oil-and-gas GDP by 2020.

ECONOMIST: Turkmenistan's plight

They account for only 6% of non-oil-and-gas exports and 14% of the value added by local manufacturing.

CNN: Big Little Problems