Most automobile engines operate on a four stroke cycle.
大多数发动机为四行程发动机。
The four-stroke cycle which is in common use.
这就是常用的四冲程循环。
This is the four-stroke cycle which is in common use.
这就是常用的四冲程循环。
The four strokes in the four-stroke-cycle engine, in their proper order, are intake, compression, power, and exhaust.
四冲程循环发动机中，四个冲程的固定顺序是：进气、压缩、作功和排气。
The four strokes in the four-stroke-cycle engine, in their proper order, are intake, compression, power, and exhaust.
四冲程循环发动机中，四个冲程的固定顺序是：进气、压缩、作功和排气。
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