Non-mature gas and oil mean those whose byried depth is more shallow than the threshold depth of the sedementary organic matter which is transformed into the gas and oil.

未成熟油气是指那些埋藏深度浅于成熟门限深度的沉积有机质生成的油气。

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Based on Empirical Mode Decomposition (EMD), a new method was presented to monitor flow pattern of oil-gas two-phase flow by using energy evaluation and threshold probability statistical technique.

基于经验模态分解技术，采用能量评估和阈值概率统计手段，提出了一种油气两相流流型状态监测的新方法。

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The importance and formulation method of the oil analysis for threshold have been researched.

研究油液分析界限值的重要性和制定方法。

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The shaky U.S. economy has turned oil traders skittish, and Wall Street rallied out of bear territory Thursday as crude crossed back below a symbolic threshold.

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