这些反应增加了不完全燃烧的可能性,更有可能释放未燃尽和光化学活性碳氢化合物到大气中。
These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.
煤烟通常是燃料不完全燃烧的产物。
Soot is usually the product of the imperfect combustion of fuel.
煤烟是燃料不完全燃烧的产物。
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