The intake and exhaust valve opening times will overlap as RPMs rise, recycling some of the charge the outgoing air creates.
进气和排气的气门开合时间随着转速的提高相互交叠，循环着将废气排出。
The intake and exhaust valve opening times will overlap as RPMs rise, recycling some of the charge the outgoing air creates.
进气和排气的气门开合时间随着转速的提高相互交叠，循环着将废气排出。
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