Stockpiles of crude oil and petroleum products in the U. s. swelled to an all-time high in the week ending Aug. 6, while China, the primary engine of demand growth, cut back on its oil imports.

美国8月6日当周的原油和成品油库存量跃至创纪录的高点，而作为世界石油需求主要推动因素的中国，却减少了自己的石油进口。

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The most economic feasible products transported by pipeline are crude oil, natural gas and refined petroleum one.

通过管道运输的最经济可行的产品是原油、天然气和成品油。

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Due to the reduction of petroleum reservoir and deeper extraction, the crude oil is heavier and poorer in the world, and the light products in the oil is becoming decreased.

随着原油储量的递减及原油的深度开采，世界性原油质量逐渐变重、变劣，轻质油品含量降低，必须进行重油轻质化。

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This unit also includes the buying, selling and transporting of crude oil and petroleum products.

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The EU said the sanctions prohibit the import, purchase and transport of Iranian crude oil and petroleum products as well as related finance and insurance.

BBC: Iran: EU oil sanctions 'unfair' and 'doomed to fail'

Growth in U.S. real imports slowed to about 3 percent in 2006, in part reflecting a drop in real terms in imports of crude oil and petroleum products.

NPR: Bernanke: U.S. Growth 'Moderate' as Inflation Rises