Commercial test proves that topped oil is an excellent ethylene pyrolysis feedstock.

工业试验证明，拔头油是一种优良的乙烯裂解原料。

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With the lack of crude oil resources in the world, the development of methane utilization as the feedstock, instead of crude oil, for the production of chemical has been extensively studied.

近年来，随着世界性石油资源短缺，开辟以甲烷为原料替代石油资源的基本有机化工合成路线是十分富有挑战性的研究课题之一。

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The thermal poly-condensation and carbonization test of flashing oil as feedstock and ethylene residual oil as additive was conducted in the laboratory.

采用煤沥青闪蒸油为原料，乙烯残油为添加剂，在实验室内进行热缩聚及炭化实验。

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Meanwhile, they were facing the problem of running out of crude oil feedstock at the St.

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It will also impose costly refinery modifications and require and necessitate increased importing of higher quality, non-California crude oil feedstock.

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Gasoline prices often rise and fall with crude oil prices, and so complex refineries that can process lower priced crude feedstock typically see their margins improve during rising oil prices.

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