The four-stroke cycle which is in common use.

这就是常用的四冲程循环。

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This is the four-stroke cycle which is in common use.

这就是常用的四冲程循环。

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Each CAM must revolve once during the four-stroke cycle to open a valve.

在四行程循环时，每凸轮必须旋转打开一阀门。

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For years he had contemplated the inefficiencies of the traditional four-stroke Otto cycle engine (named for its 1876 developer, Nikolaus A. Otto).

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