The results of the investigation show that soot appears firstly in the rich fuel area where is permeated by air within combustion chamber.

研究结果表明：在柴油机燃烧过程中碳粒最早出现在燃烧室内有空气渗混的富油区；

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For maximum engine power, a rich fuel mixture is mandatory in order for the combustion process to consume all the oxygen in the air entering the combustion chamber.

在发动机最大功率的工况下，燃烧过程中浓的可燃混合气会将燃烧室中的所有空气消耗完。

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Krasnoyarskiy Kray is the largest base of raw material resources in Russia. Its rich fuel-power resources and mineral resources have a strong appeal to the home and foreign investors.

克拉斯诺亚尔斯克边疆区是俄罗斯重要的矿物资源基地之一，其丰富的燃料动力资源和矿产资源对国内外的投资者吸引力很大。

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She will be replacing that energy with nutritionally rich fuel.

CNN: Nyad: Swim shows 60s 'not too late' for goals

This would be cost-effective because most equipment in rich countries is already fuel-efficient.

ECONOMIST: A cooling off period

The consultants McKinsey has returned to one of the business and economic issues of our age, the massive debts of the rich developed countries that borrowed excessively to fuel growth in the boom years.

BBC: US ahead of UK on road to reducing debts