从理论上对多缸内燃机缸套活塞系统摩擦学与动力学的耦合问题进行了研究。

The coupling problem between the dynamic behaviors and the tribological behaviors of the piston-liner systems in multi-cylinder internal combustion engines was studied.

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缸套—活塞系统是内燃机的核心构成，缸套穴蚀是内燃机缸套的主要失效形式之一。

Cylinder-piston system is the heart of internal-combustion engine. Cylinder liner cavitation is one of main disabled form.

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这里发生了膨胀,所以系统对外界做功，活塞被推出来。

Here there's an expansion going on, so the system is doing work to the external world.

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Well, we start out with our usual system, and we have a bunch of little pebbles on it.

还是那个系统，活塞上面放了很多小石子。

麻省理工公开课 - 热力学与动力学课程节选

The piston has a cross-sectional area, a, and the force pressure is force per volume area.

我们以活塞系统为例，来说明膨胀功。

麻省理工公开课 - 热力学与动力学课程节选

Here there's an expansion going on, so the system is doing work to the external world.

这里发生了膨胀,所以系统对外界做功，活塞被推出来。

麻省理工公开课 - 热力学与动力学课程节选