1)product conversion,油品变换2)disintegration of lubricating oil,油品衰变3)deterioration of oil product,油品变质4)fungible products,可代换油品5)oil-for-food-program,石油换食品计划6)darkening of oil,油品(的颜色)变暗
用法例句
Study and application of monitoring technique for disintegration of lubricating oil;