This is the idea that a patentshould be given to a machine or something that creates a material change, like a chemical process.

VOA: special.2010.07.16

I could change my external pressure through the whole process, and that's the path.

事实上外界压强,也不必固定。

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It's nR log of p2 over p1 for the process where there's a pressure change.

结果是dS等于nR乘以p2除以p1的对数,这是对压强变化的结果。

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