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V So this nR over V. And then, using the relation again, T we can just write this as p over T.
恒定温度下的dp/dT等于nR除以，再次利用状态方程，可以把它写成p除以。
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p We want p equal to p external for the entire expansion, p2 and p external is decreased steadily from p1 to p2.
在膨胀过程中保持p等于外部，外部p很快从p1衰减到。
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And the last bond that we have here is a carbon-carbon bond, and this is our last p orbitals that are coming together.
最后一个键是碳碳键，这是最后一个组合的p轨道。