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Chuyên ngành
Oxford
A hydrocarbon oil found in the upper strata of the earth,refined for use as a fuel for heating and in internal-combustionengines, for lighting, dry-cleaning, etc.
Petroleum ether avolatile liquid distilled from petroleum, consisting of amixture of hydrocarbons. petroleum jelly a translucent solidmixture of hydrocarbons used as a lubricant, ointment, etc.[med.L f. L petra rock f. Gk + L oleum oil]
tác giả
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