寒冷的空气中摄入可以帮助你提高你的燃料经济的空气燃料比。
Cold air intakes can help your fuel economy by improving your air to fuel ratio.
氢气比空气轻，但是将它经压缩存储在燃料箱中并添加所有必需设备后飞机又变重了。
Hydrogen is lighter than air, but compressing it, storing it in tanks and adding all the necessary equipment starts to tip the scales towards heavy again.
新款引擎的燃料空气压缩率高达14比1，而一般的引擎只有10比1。
Still, the new engine gets a 14-to-1 ratio for fuel-air compression, compared with the more common 10-to-1 ratio for engines.
常规燃烧只存在于理想的燃料空气比中，叫作可燃性界限。
Conventional combustion can only exist within well-defined fuel to air ratios, known as the flammability limits.
当空气-燃料比变化时，燃烧干煤与燃烧高水分煤有着类似的试验结果。
For the combustion of dry coal, the results with varying air fuel ratio are similar to those for the combustion of high moisture coal.
当空气-燃料比变化时，燃烧干煤与燃烧高水分煤有着类似的试验结果。
For the combustion of dry coal, the results with varying air fuel ratio are similar to those for the combustion of high moisture coal.
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