主汽门阀壳是大型汽轮机的关键零件。

Main valve housing is a key part of giant turbines.

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汽门座研磨砂轮主要用于引擎中汽车门座研磨。

Carbo valve seat Grinding Wheel is used mainly for valve seat grind in an engine.

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汽门最佳开启时刻满足的条件是，开启后系统的暂态能量最小。

The transient energy of the system is minimum when opening at the optimal time.

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汽门最佳开启时刻满足的条件是，开启后系统的暂态能量最小。

The transient energy of the system is minimum when opening at the optimal time.

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