Petroleum is a complex mixture of non-aqueous and hydrophobic components like n-alkane， aromatics， resins and asphalt.
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Not mainly the ageing of resins and asphaltenes but that of saturates and aromatics cause the ageing of asphalt.
沥青热氧老化的原因主要是饱和分和芳香分的氧化，而不是胶质和沥青质的氧化。
Petroleum is a complex mixture of non-aqueous and hydrophobic components liken-alkane, aromatics, resins and asphalt.
石油是一种疏水混合物例如：烷烃，芳香烃，树脂和沥青。
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