压缩比增加，发动机充量系数增加，燃烧速率加快，热效率提高。
When compression ratio is increased, the volumetric efficiency is increased, giving a fast burning rate and thus high thermal efficiency and power output.
压缩比增加，发动机充量系数增加，燃烧速率加快，热效率提高。
When compression ratio is increased, the volumetric efficiency is increased, giving a fast burning rate and thus high thermal efficiency and power output.
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