It is much easier to detonate a mixture of air and fuel if it is highly compressed prior to (or during) the ignition process.
这是非常容易引爆的空气和燃料如果是高度压缩之前(或期间)点火过程的混合物。
The spark plug fires, igniting the compressed air-fuel mixture which produces a powerful expansion of the vapor.
火花塞点燃压缩的空气燃油混合气，燃烧使混合气迅速膨胀。
We have seen how the mixture of air and fuel is delivered by the fuel system to the engine cylinder, where it is compressed, ignited, and burned.
我们已经了解油气混合燃料是如何通过燃料供给系统输送到发动机气缸，并在气缸中压缩、点火、燃烧的。
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