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link 19.04.2008 10:37 |
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Subject: asphaltenic material oil for residual fuels, a prewash with an aromatic solvent such as toluene or xylene may be necessary to remove asphaltenic material
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| "асфальтеновые вещества" или просто "асфальтены" |
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link 19.04.2008 16:07 |
| спасибо:) |
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