A turbulent combustion of hydrocarbon fuel-rich gas with air two-dimensional supersonic shear flow was numerically simulated.

数值模拟碳氢富燃燃气与空气二维超声速剪切流动的湍流燃烧。

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But in the fuel lean and fuel rich explosive gas, the electrical conductivity increases gradually from bottom to top.

贫燃料与富燃料爆炸气体中，由管道底部向上，其电导性是逐渐增大的。

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The results show that the effects of speed on the exhaust gas emission and fuel economy are related with the ratio value and the absolute time of lean burn and rich burn.

结果表明：稀燃发动机转速对其有害气体排放和燃油经济性的影响与稀燃吸附还原催化转化器稀燃运行时间与浓燃还原运行时间比值大小和绝对时间大小有关。

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That mixture is then fed into a fuel reformer that turns it into a hydrogen-rich gas.

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And the Morales decision follows a trend by oil and gas-rich Latin American nations seeking a larger share of the profits from fossil fuel extractions, and exerting greater control over the energy sector.

NPR: Bolivia Takes Control of Domestic Energy Industry