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| Subject | English | Slovene |
| environ. | coal refining | rafiniranje premoga (Predelava premoga, z namenom odstraniti nečistoče) |
| environ. | oil refining | rafiniranje nafte (Ločevanje naftnih mešanic v sestavne dele) |
| econ. | oil refining | rafiniranje nafte |
| sugar. | refining margin | rafinerijska marža |
| econ. | sugar refining | rafiniranje sladkorja |