For instance, simply changing the action of intake and exhaust valves in a car while it is running could significantly improve gas mileage.

比如，在汽车行驶过程中，仅仅改变进气阀和出气阀的历程就能显著地提高汽油里程。

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Applied to Automatic Control Valves the exhaust pipe auto exhaust valve should be installed on top of the water cycle, the gas readily forms place.

运用于管道排气的自动排气阀应安装在热水循环的顶端，气体容易堆积的地方。

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Exhaust valves of both gasoline and Diesel engine are damaged by combine gas corrosion and fatigue stress, which caused the formation of pits.

无论汽油机或柴油机气阀，都是在燃气腐蚀与疲劳应力的联合作用下过早地产生所谓“麻坑”而损坏。

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